I don't know how helpful I'll be, but here:
Lucario is pretty good, however putting both ExtremeSpeed and Bullet Punch on the same moveset is a bit redundant. Most pokemon that carry priority have a base speed lower than 70 (lucario with 90), thus having extremespeed is a bit useless with the +2 priority. Having protect is a much better move.
Sneasel can play support for both of the pokemon so I'd recommend removing Whimsicott.
Since whimsicott is gone I'd recommend scarfing Dracovish. The attack boost is gone but oh well.
I'd recommend Incineroar(since this is season 5, also incineroar is just a surperior version of arcanine)
Incineroar@Safety Goggles
Ability: Intimidate
Careful Nature
EVs: 220 HP, 4 Atk, 92 Defense, 188 SpD, 4 Spe
-Fake Out
-Flare Blitz
-Snarl
-Parting Shot
Incineroar is really good at making sure your enemies are really, really, weak. Parting Shot for the attack/special attack shot+pivot, snarl for special attack drop, and flare blitz for damage.
Sneasel is a better replacement for weavile as it has the ability Inner Focus which essentially makes it immune to fake out, a move that destroys weavile. Psycho cut is unneeded(it isn't even STAB), and taunt is a good move to put on it so that other pokemon can't do any weird stuff, especially trick room.
Coalossal should have protect over scald, scald covers ground, fire and rock. Solar beam covers both ground and rock, and rock covers fire, so it is pretty useless and coalossal should have protect instead.
For the last member, since its VGC series 5, I recommend togekiss with the following moveset.
Togekiss @ Babiri Berry
Ability: Serene Grace
Bold Nature
236 HP, 196 Def, 4 SpA, 12 SpD, 60 Spe
-Follow Me
-Helping Hand
-Air Slash
-Yawn
Togekiss can offer valuable support to your team-For example, when playing with Lucario or Coalossal, you can easily protect, switch in to togekiss, and then on the next turn follow me with togekiss and essentially never take damage. Helping Hand helps you deal extra damage, yawn puts your enemies to sleep, and Air Slash for flinch hax.
If you want to convert into Series 6(togekiss and incineroar are banned)
Arcanine @ Sitrus Berry
Ability: Intimidate
Timid Nature
220 HP, 4 Def, 4 SpA, 60 SpD, 220 Spe
-Snarl
-Will-O-Wisp
-Protect
-Heat Wave
Snarl for the special attack drop, will-o-wisp halves attack
Amoonguss @ Coba Berry
Ability: Regenerator
Sassy Nature
252 HP, 108 Def, 4 SpA, 144 SpD
-Spore
-Rage Powder
-Protect
-Pollen Puff/Giga Drain
Spore puts your enemies asleep, rage powder for redirection, and pollen puff heals your allies(or damages your foes), or you could use giga drain for better damage output
Hope I helped!
Series 5
Series 6
