236Atk 236spd 36HP
I don't really understand why you would use would use Silk Scarf over Life Orb, even if you're only using Normal-type moves, as you have a higher damage output with Life Orb, and it's not exactly like the extra recoil damage would change most of the KOs Aipom would suffer, as without Eviolite, it's pretty frail and would falter to most attacks anyway. Your EV spread is also off, it should be 72 HP / 196 Atk / 236 Spe in order not to waste any EV points as you weren't getting any points in HP with only 36 EVs. Also, why did you decide Adamant instead of Jolly, the extra speed tie chance with the other 19 speeders could mean the difference between a Baton Pass or a dead +2 Aipom, should you even be able to pull off a Nasty Plot.
Unfortunately, Timburr almost always carries Mach Punch, or at least everyone I've seen, and it would usually rather Drain Punch for the OHKO and recovery anyway. Scraggy can set up on you as you do whatever you want to it, as you won't KO it and if you NP pass to Gastly, it would just kill it and continue its sweep.
It seems like you were trying to combine both the Lead and Baton Pass set to rather lackluster results. Perhaps you could just slap an Eviolite on there, change the nature to Jolly, fix the EVs (possibly more defensively if there's any significance for it against common attackers), and possibly slip on Shadow Claw if you want a way to deal with Misdreavus, as you 2HKO with LO, if you also decide to go with that instead of Eviolite. You definitely don't have to go with a special attacker just because you have Nasty Plot on the set, especially since Aipom isn't exactly a specially oriented attacker, and it's good that you saw that.
236SpA 236spe 36 def
Your EV spread is a bit off again, not all attackers have their speed and attacks end in 236 EVs, Gastly in particular has its speed and special attack end in 196 EVs (or 200 EVs should you use HP Fighting or anything that lowers the IV to 30). If you decide to use Eviolite, the EV Spread 36 Def / 196 SpA / 76 SpD / 196 Spe would be most optimal, as you want a non 20 HP number to get 4 subs instead of 3. Although, it might be more beneficial to use Oran Berry since you're using Substitute, but still use that EV Spread, or 40 Def / 200 SAtk / 200 Spd if you ever decide to use Hidden Power Fighting. The Gastly EV spread on the analysis is oddly off as well..
It's a decent set, I just don't understand why you would use it over Misdreavus, as you miss that 19 speed benchmark, the awesome bulk, and you lose to opposing Misdreavus one on one, as they're 2HKOd by your Shadow Ball, but they OHKO you with theirs and outspeed you (should you not be able to get a Substitute up).
236atk 236spe 36def
Your EVs are going slightly over the real benchmarks, its not affecting anything "real" other than aesthetics, but just for future reference the benchmarks are 228 Atk / 4 Def / 236 Spe. Interesting set, I always suck with using Buneary though, so I don't really have much to comment for it.
220def 220SpD 70Hp OR SpA
Setting up sandstorm on your own just isn't worth it and Recover is just so good for keeping Lileep alive I'd be surprised to see a good set without it. Ancient Power might be better replaced by Hidden Power Rock or Toxic, just to give off better damage or to help with the stalling nature of this set. Although I can definitely see the fun appeal of Ancient Power's chance of stat ups, it's still a pretty low chance. Stockpile doesn't really help it beat any special attackers that it doesn't already beat or lose to, because of that I think Barrier would be the superior option, especially if you use this set in the sand, where you probably should be anyway. Barrier actually helps you take on really strong physical attacks, such as Mienfoo's HJK, whereas Stockpile fails to give you enough defense. Also, your EVs overall are not really optimal, a spread of 228 HP / 220 Def / 60 SpD with a Bold nature in the sand might work best or a spread of 228 HP / 144 Def / 28 SpA / 64 SpD / 16 Spe with calm nature would also work better, should you fear sand being taken away from you or you don't use Hippopotas on your team.