After testing and changing a lot of Pokemon this is my final sun team (for now) it has won me many matches and most of my losses were cause of mispredictions and carelessness, I believe it still has room for improvement
Nickname:Amaterasu
Nature:Timid
EV spread: 252 Spd, 252 Sp. atk, 4 Sp. defense
Ability:Drought
Item:Leftovers
Moveset:Fire blast, Solar Beam, HP Ice, Sunny day
First of all is Ninetales which is essential for any sun team, It runs an offensive set and it actually works really well, leftovers increases it's longevity and there aren't much choices besides that anyway, fire blast is immensely powerful under the sun, solar beam 2HKO's most water types and HP Ice is great to damage Dragons that are switching in or the ever popular Landorus and Gliscor which can be really annoying if not dealt with right away, for the fourth move I put sunny day to counter other weather inducers switching in but I haven't had much luck using it, I'm considering switching it with Will-O-Wisp
Nature:Adamant
EV spread:252 Attack, 252 Speed, 4 HP
Ability:Sheer Force
Item:Choice scarf
Moveset:Flare Blitz, Rock slide, Superpower, U-Turn
Darmanitan was the Pokemon I always considered to be one of the best choices for sun teams, with sheer force, intense sunlight and maximum attack investment, this Pokemon is insanely hard to deal with, I equipped a choice scarf since there's always a faster Pokemon on the opposing team that can easily dispose of Darmanitan, it runs the standard set, Flare Blitz, Rock slide, Superpower and U-Turn for scouting and hitting psychic and dark types hard.
Nature:Bold
EV spread:252 HP, 252 Defense, 4 Speed
Ability:Chlorophyll
Nickname:Mimi
Item:Leftovers
Moveset:Giga drain, Quiver dance, Sleep powder, HP Rock
at first glance Lilligant looks like it doesn't pose much of a threat, but after putting the opponent to sleep and setting up 3-4 Quiver dances it becomes nearly unstoppable, Giga drain is one of it's best options as it restores huge chunks of HP after a couple of boosts, HP Rock provides fantastic coverage hitting most Pokemon that resist grass for supereffective, the reason I chose Lilligant over other chlorophyll users is because it is underestimated and it has access to Quiver Dance.
Nature:Adamant
EV spread:252 Attack, 252 speed, 4 HP
Ability:Moxie
Item:Choice scarf
Moveset:Outrage, Earthquake, Fire fang, Dragon claw
I know it's not really a good idea to have two choice users on the same team, but I found this to work much more effectively than the Dragon Dance set, most of the time Salamence is taken out before setting up or even if it does survive there's always that ice shard ruining the round of setup forcing me to switch out or result in it's demise, the moveset is pretty simple, Outrage for those moments I desperately need it's power, Dragon Claw is for weakened foes to take them out and receive the boost from moxie sweeping the opposing team if it lacks a steel type or if it has been taken out, Earthquake is really useful for taking out opposing fire types and many other dangerous threats, Fire fang for pretty much everything that has a 4x weakness to fire.
Nature:Impish
EV spread:252 HP,252 Defense, 4 Attack
Ability:Sturdy
Nickname:BFGoodrich
Item:Leftovers
Moveset:Earthquake, Ice shard, Rapid spin, stealth rock
not much to be said about Donphan, it's running the standard and most effective set, Donphan is much needed to get rid of stealth rock for Ninetales, Darmanitan and Salamence, ice shard is there to take out opposing Dragons
Earthquake for STAB and fantastic coverage, leftovers is the most effective item although I did consider Lum berry as well seeing how much desperate my foes are to cripple Donphan with poison or burn
Nature:Timid
EV spread:252 Speed, 252 HP, 4 Defense
Ability:Magic Bounce
Item:Light Clay
Moveset:Psyshock, HP Fire, Reflect, Light screen
Espeon is probably the second most useful member of the team (after Ninetales) as it bounces back entry hazards, status effects and sets up Light screen and Reflect to make it much more easier for Salamence and Darmanitan to switch in and out constantly, moveset is pretty simple, psyshock to take out fighting types easier, HP Fire since it receives a boost from the sun making it more powerful and of course light screen and reflect
Please inform me of any improvements that can be done to my team, thanks for reading my RMT :)

Nickname:Amaterasu
Nature:Timid
EV spread: 252 Spd, 252 Sp. atk, 4 Sp. defense
Ability:Drought
Item:Leftovers
Moveset:Fire blast, Solar Beam, HP Ice, Sunny day
First of all is Ninetales which is essential for any sun team, It runs an offensive set and it actually works really well, leftovers increases it's longevity and there aren't much choices besides that anyway, fire blast is immensely powerful under the sun, solar beam 2HKO's most water types and HP Ice is great to damage Dragons that are switching in or the ever popular Landorus and Gliscor which can be really annoying if not dealt with right away, for the fourth move I put sunny day to counter other weather inducers switching in but I haven't had much luck using it, I'm considering switching it with Will-O-Wisp

Nature:Adamant
EV spread:252 Attack, 252 Speed, 4 HP
Ability:Sheer Force
Item:Choice scarf
Moveset:Flare Blitz, Rock slide, Superpower, U-Turn
Darmanitan was the Pokemon I always considered to be one of the best choices for sun teams, with sheer force, intense sunlight and maximum attack investment, this Pokemon is insanely hard to deal with, I equipped a choice scarf since there's always a faster Pokemon on the opposing team that can easily dispose of Darmanitan, it runs the standard set, Flare Blitz, Rock slide, Superpower and U-Turn for scouting and hitting psychic and dark types hard.

Nature:Bold
EV spread:252 HP, 252 Defense, 4 Speed
Ability:Chlorophyll
Nickname:Mimi
Item:Leftovers
Moveset:Giga drain, Quiver dance, Sleep powder, HP Rock
at first glance Lilligant looks like it doesn't pose much of a threat, but after putting the opponent to sleep and setting up 3-4 Quiver dances it becomes nearly unstoppable, Giga drain is one of it's best options as it restores huge chunks of HP after a couple of boosts, HP Rock provides fantastic coverage hitting most Pokemon that resist grass for supereffective, the reason I chose Lilligant over other chlorophyll users is because it is underestimated and it has access to Quiver Dance.

Nature:Adamant
EV spread:252 Attack, 252 speed, 4 HP
Ability:Moxie
Item:Choice scarf
Moveset:Outrage, Earthquake, Fire fang, Dragon claw
I know it's not really a good idea to have two choice users on the same team, but I found this to work much more effectively than the Dragon Dance set, most of the time Salamence is taken out before setting up or even if it does survive there's always that ice shard ruining the round of setup forcing me to switch out or result in it's demise, the moveset is pretty simple, Outrage for those moments I desperately need it's power, Dragon Claw is for weakened foes to take them out and receive the boost from moxie sweeping the opposing team if it lacks a steel type or if it has been taken out, Earthquake is really useful for taking out opposing fire types and many other dangerous threats, Fire fang for pretty much everything that has a 4x weakness to fire.

Nature:Impish
EV spread:252 HP,252 Defense, 4 Attack
Ability:Sturdy
Nickname:BFGoodrich
Item:Leftovers
Moveset:Earthquake, Ice shard, Rapid spin, stealth rock
not much to be said about Donphan, it's running the standard and most effective set, Donphan is much needed to get rid of stealth rock for Ninetales, Darmanitan and Salamence, ice shard is there to take out opposing Dragons
Earthquake for STAB and fantastic coverage, leftovers is the most effective item although I did consider Lum berry as well seeing how much desperate my foes are to cripple Donphan with poison or burn

Nature:Timid
EV spread:252 Speed, 252 HP, 4 Defense
Ability:Magic Bounce
Item:Light Clay
Moveset:Psyshock, HP Fire, Reflect, Light screen
Espeon is probably the second most useful member of the team (after Ninetales) as it bounces back entry hazards, status effects and sets up Light screen and Reflect to make it much more easier for Salamence and Darmanitan to switch in and out constantly, moveset is pretty simple, psyshock to take out fighting types easier, HP Fire since it receives a boost from the sun making it more powerful and of course light screen and reflect
Please inform me of any improvements that can be done to my team, thanks for reading my RMT :)