Honestly, not all on the same team but these pokemon have worked well on teams for me.
Blaziken (no matter what I will never consider speed boost chicken under ever), Infernape, Gliscor, Lucario, and Whimsicott
Reasons you say ?
Blaze: With getting lucky about either A: Causing a swap, B: Predicting a move that won't kill C: Living with sash or other ways, Ken rapes. Simply being able to hit as hard as he can is amazing. (Still not uber imo)
Nape: With higher initial speed than Ken, there is no need to protect. And even then, with the option of using grass knot on the R/S cover legends, CC which is safer than HJK, being able to uturn out, it's high 108 speed, along with mixed 104 (right ?) mixed attacking stats hits just so hard. And now with iron fist he can use Mach Punch right off the bat
Gliscor: Are special attacks everywhere ? Yes. Is ice one of the main attacking types ? You bet. Are things much higher attacking stats a pain yep. Can Gliscor wall the physical ones ? Definitely. With his sub, toxic, protect, taunt set he's able to stall and poison so many things. Plus he can use the option of EQ to hit many things at least neutrally. So when used right, rouge can be a major asset
Lucario: Although Lucy may have a glass jaw, she can hit amazingly hard. Mostly with her physical set, but purple never foresee the special set coming. Yes, the physical can sweep side by side with EK Arceus, and hit on most uber.lower defense, but still hits hard. But get physical moves have much more power. And with 2 priority moves in her physical roster, she can do beautifully
Whimsicott: Priority seed, sun, and sub and even encore and taunt, this pokemon can make done fortresses shake and all they can do is swap and spin. And sadly gyro ball
Mienshao: While behind the musketeers, her abnormally high 105 base speed, along with high attack, with the highest power fighting move, (i think right ?), regenerator, uturn, enough special attack to go slightly mixed, she can hit many, again on the weaker physical defense, along with hitting many steels, and even dark types she is amazing. (To bad noting she can do to ghosts)