 If you liked
Sakamoto desu ga?
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 ...then you might like
Maou Gakuin no Futekigousha: Shijou Saikyou no Maou no Shiso, Tensei shite Shison-tachi no Gakkou e Kayou
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Similarities:
Both mc are literally just perfect in every single way.
Both mc wants to help people around him
Also, although misfits of demon king academy doesn't really have a lot of comedy, the stuff that happens are so obscure that it may as well be comedy. Just telling you here that except Saiki K this is probably the closest to sakamoto desu ga you'll get from obscureness and the mc.