Chansey sits at #7. Hitmontop (#3), Heracross (#5), and Arcanine (#6) all have basically the same function as Staraptor against Chansey.
And yes, I realize that they're not exactly replacements for Staraptor, as they may play different overall roles on a team.
Which says a lot about the centralisation that Chansey causes, to be frank:
#1: Staraptor Close Combat, all moves are dangerous for Chansey
#2: Donphan: Cannot beat Chansey, but is a physical attacker, so will force Softboiled/Wishspam
#3: Hitmontop: Fighting Type
#4: Zapdos: Can Roar Chansey out
#5: Heracross: Fighting Type
#6: Arcanine: Close Combat, powerful physical atacks
#7: Chansey
In fact, the first pokemon in the list which is certainly played as a Special Sweeper is Masmagius.
[Espeon was obviously BP a lot of the time, Mew could be any set, Zapdos plays defense and checked Staraptor, Nidoking is a Revenge Killer, Celebi could play support, and Victini is usually physical]
Well, with Staraptor gone, that's one less Chansey check.
Also, I derped with Klingklang, seriously. I could have sworn it had Wild Charge...