I would like to share a few words about Fighting types since I have been running them for the last 2 years without switching.
Majority of Fighting types are limited to only Physical offense with exception to Mienshao, Toxicroak, Infernape, Virizion, Cobalion, and Keldeo. Even though many Fighting types are great sweepers in the meta, you have to keep in mind you are running a mono-type team and that running a team of all sweepers stuck with Choice Scarfs can be extremely crippling.
When it comes to all Fighting types, switching should be kept at a minimum. Not only is it easy for an opponent to predict your switch-ins, not all of your Fighting types are going to be the bulkiest and would become really crippled on the switch in. The only Psychic immunity you would have is Scrafty, and that is if you would run Scrafty. Say for example you needed to switch in Scrafty to take on Reuniclus, one of Fighting team's nightmares. if you were to switch into Scrafty, you would leave the opposing Reuniclus to do one of the following: Set up Trick Room, up it's Special Defense and attack with Calm Mind, or go with the Focus Blast. This would render your Scrafty near useless because then Scrafty would eat it either during the switch in or the following turn because Scrafty needs to set up to become effective.
I realized the focus of the team should be that it has a very diverse move pool to take on any challenge. For example, Machamp is very great because he has options when it comes to different opponents. Machamp literally gets a free confusion with Dynamic Punch against anything that isn't Ghost. The confusion can wreck an opponent and give Machamp more turns to beat on the opponent struggling with a 50/50. The lead Machamp build here on the Smogon strategy Pokedex is probably one of the few effective builds that you can find here that can assist in mono-typing since it provides great coverage.
Back when Smogon only had the Bulk-up Conkeldurr build available, I decided to find alternatives around the situation. I could not rely on the Bulk-up build because I had to take into consideration all of the Psychic and other hard hitting Special Attackers into consideration that could easily destroy Conkeldurr's HP as soon as I were to get in one Bulk-up. So, I made a Flame Orb build, the exact one you see here on Smogon. Only difference is that I have Stone Edge aside from Facade. When I partook in the Intercollegiate Pokemon Competition, my opponent built a team specifically to counter Fighting types because he knew I was running a monotype team alongside my other team mates. When I sent out the Conkeldurr, it threw my opponent off into believing it was the Bulk-up strategy and I got a free strong hit in. The Flame Orb kicked in and my Conkeldurr went to town on the following Pokemon, giving me a 4-2 lead.
My advice when it comes to running Mono-types is to try not switching while running Mono-types. If your Pokemon cannot counter or slow down opposing builds that try to set up, then think of ways around or various move pools/builds that can prove to be effective and try again. Trust me, not switching is one of the keys to identifying the best Pokemon and move pools that could best assist your the monotype team you are focusing on building. I use to run all of the Pokemon shown in the notable members section, but now I limited it down to Infernape and Terrakion and I use other Fighting types that could prove to be powerful and helpful.
Here are some interesting builds that you can mess around with if you are interested in mono type Fighting:
Bulk-Up Gallade is a beast if you can set up properly. I stopped running it because Sableye is a huge problem with Will-o-Wisp and that you are limited to only two attacks since Drain Punch should be staple on that build.
Another interesting Fighting build is a support Mienshao. People use Mienshao too much as a offensive fighter, but I rather use him as support since there are better Pokemon that could beat up. I use to run Mienshao with U-turn, Brick Break, Knock off, and Taunt. While holding a Focus Sash and has Regenerator. This Mienshao would be about helping out with switching in Pokemon safely and forcing switch outs. For example, if the opponent doesn't switch with Reuniclus while you U-Turn after a Taunt, you can safely bring in a great counter offensive like Heracross to dish out heavy damage to Reuniclus or whatever switch out you force. If the Opponent switches, then you can safely get in a counter offensive after the U-Turn and force another switch out, allowing you to set up.
Salac Berry Sawk is a pretty neat build to run for being a NU Fighting type. Adamant Sawk has 380 attack, and without entry hazards, he can safely Close Combat and still be safe with his sturdy ability. If hit hard and survives with Sturdy, then you can dish out a STAB Reversal on your opponents with the extra speed (If the opponent doesn't have priority). Give him Stone Edge and Earthquake and Sawk can hit even more of a variety of Pokemon. Kind of situational, but it has helped me against flying threats like Staraptor and Honchkrow.
Remember that Moxie Heracross and Keldeo are out now. Moxie Heracross is a great late game sweeper for Fighting since no priority attacks are super effective against him. Hercross' move pool is not that shabby, and technically all you really need are either Megahorn or Close Combat. Keldeo may have a pretty bad move pool, but with Rain teams running around, Keldeo can work really effective in the rain against opponents. Packing HP electric can save you against opposing Water types, and Water-Ground combos would eat a STAB Rain boosted Hydro Pump or Surf to the face. Also, you do not have to worry about a random Chansey or Blissey opposing you because Secret Sword is the saving grace in that situation.
As mentioned earlier, Cobalion is worth checking out. The high Defense stat saves him a lot and T-Wave can help you slow down opponents that can wreck your team.
Hitmontop is probably one of the last ones I will mention because Hitmontop is a great Technician-priority whore and one of Fighting's few Rapid Spinners.
The reason I do not really mention Breloom is because, like Lucario, has great attack, but low speed and defenses are pretty bad. Even if you max out Breloom's Special Defenses, a Super effective special attack can still take him out. Also, being limited by the sleep clause, Choicing Spore is not too safe since it would bring forth a lot of switching and STAB Seed Bomb would only really save your from only Jellicent and Golurk as two threats. Lucario is also another Pokemon I do not like on Monotype fighting teams because of similar reasons to Breloom, except more based on his Offensive game. You can run a Choice Scarf Modest or Adamant Lucario, but that would bring forth switching and STAB Steel will not hit anything hard that Fighting can't except for maybe Frosslass or Bug-Rock/Flying-Rock combinations. Usually no one runs as many Bug-Rocks and Flying-Rocks (Aerodactyl and Archeops) and Frosslass are leads quite often, making it foolish to run a Choice Pokemon as a starter. I am not saying that you are not allowed to run Lucario, but rather you should see what else there is to offer before Lucario. To me, Lucario would probably only serve best as a Special Late game sweeper, or to hit very specific Pokemon hard.
One last thing: Beware of Focus Sash and Sturdy Pokemon. The only set-up move and Pokemon you have on monotype Fighting is a Infernape with Stealth Rocks. If you need to get rid of entry hazards yourself, then the only Rapid Spinners would be the Hitmons, which only Hitmonlee and Hitmontop are the most viable. If Toxic Spikes give you trouble, you can use Toxicroak to absorb them, or use them to your advantage to activate Guts on the many Fighting types who have access to the ability.
Hopefully this information helps people out when it comes to mono typing with Fighting. Have fun for those of you interested!