Is there a way to see which games from my steam wishlist have been in a bundle before?

Oh yeah, you're right, I forgot about that xd. I also use Steamdb's extension because it's more accurate with regional pricing and stuff.

If you go to your wishlist in browser and mouse over each game, it'll state if bundled before.

Pretty much xd

edit: Maybe someone could come with a better tool, but at least me, I don't know other method.

There is no filter but every game page on gg.deals has the infos about previous bundles. So by importing your wishlist from Steam you can then manually but pretty conveniently go through your wishlisted games.

Thanks. This seems to do the job. For those who might be looking, as it's not immediately apparent, the option is in Settings > Specials > Notifications.