For Haxorus, try Dragon Claw instead of Shadow Claw. Shadow Claw only gives you coverage against things like Reuniclus or Slowking, neither of which appreciate an Outrage anyways.
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For Ambipom try this:
Life Orb > Normal Gem (Allows you to consistently hit with 1.3x instead of just one use on Fake Out)
Ability: Technician
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Fake Out
- U-turn
- Return
- Low Kick / Fire Punch / Gunk Shot / Seed Bomb
Low Kick is fighting coverage, Fire Punch would let you hit Forretress, Gunk Shot slays fairies such as Aromatisse, Florges, or Slurpuff, Seed Bomb hits things like Seismitoad, Quagsire, or Swampert all of which wall you normally.
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Aerodactyl @Aerodactylite
Ability: Pressure
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Stone Edge
- Iron Head / Aqua Tail
- Aerial Ace
- Hone Claws
Because of Mega Aerodactyl's high speed stat, he forces out a lot of Pokémon and gives you many opportunities to setup a Hone Claws.
+1 252 Atk Tough Claws Mega Aerodactyl Crunch vs. 248 HP / 0 Def Reuniclus: 452-532 (106.8 - 125.7%) -- guaranteed OHKO
+1 252 Atk Mega Aerodactyl Stone Edge vs. 248 HP / 0 Def Reuniclus: 319-376 (75.4 - 88.8%) -- guaranteed 2HKO
Crunch can let you OHKO Reuniclus but Reuniclus isn't exactly a consistent switch-in to M Aerodactyl so you shouldn't have to worry about it.
+1 252 Atk Tough Claws Mega Aerodactyl Aqua Tail vs. 252 HP / 252+ Def Donphan: 256-302 (66.6 - 78.6%) -- guaranteed 2HKO
Aqua Tail lets you hit Donphan really hard. A 2HKO means he can't switch in and Ice Shard only does around 25-31% so he can't really touch you anymore.
+1 252 Atk Mega Aerodactyl Stone Edge vs. 248 HP / 0 Def Florges: 346-408 (96.3 - 113.6%) -- 75% chance to OHKO
+1 252 Atk Tough Claws Mega Aerodactyl Iron Head vs. 248 HP / 0 Def Florges: 488-576 (135.9 - 160.4%) -- guaranteed OHKO
Iron Head guaranteed OHKO but same situation as Crunch; Stone Edge is just as good.
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Tentacruel @Black Sludge
Ability: Liquid Ooze
EVs: 252 HP / 252 Def / 4 Spe
Bold Nature
- Scald
- Knock Off
- Acid Spray
- Rapid Spin
Tentacruel appreciates the mixed bulk from running 252 Def/Bold and because your team doesn't have a designated physical wall, this should help somewhat. Knock Off is basic utility and is a staple on Tentacruel.
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Pangoro @Life Orb
Ability: Iron Fist
EVs: 108 HP / 252 Atk / 148 Spe
Adamant Nature
- Drain Punch
- Knock Off
- Ice Punch
- Gunk Shot
252 HP/252 Def doesn't provide any direct advantages so there's no reason to bother. You still die to the same threats you would normally. Try something like 148 Speed investment which allows you to outpseed 8 Speed Florges and OHKO with Gunk Shot. (Works at lv 50 and lv 100)
Why run Gunk Shot over Poison Jab?
252+ Atk Life Orb Pangoro Poison Jab vs. 248 HP / 164 Def Florges: 268-317 (74.6 - 88.3%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Life Orb Pangoro Gunk Shot vs. 248 HP / 164 Def Florges: 400-473 (111.4 - 131.7%) -- guaranteed OHKO
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Those are really the only changes I would make. Hope this helped if you have any questions be sure to let me know ^^
