I personally like Hydra on stuff with burst, especially Zed because, fun fact, Hydra's active adds to his ult damage, which is kind of stupid.
E-Q-R-Crescent-Martial Cadence auto with J4 is one of the most stupidly well-scaling combos in the game.
Lee Sin I've only tried once or twice with it, but it gives him easy sustain and waveclear, and adds to his aoe, which is nice.
And Fiora is Fiora.
AD Assassin/Burst Champions, of which there are a decent number, all tend to benefit from what it does for you. The only one I guess it wouldn't be that good on is Kha'zix, but that's just my opinion (his stuff scales too well with AD to make anything but Bloodthirster in that department a good choice)
By the by, I completely disagree on your (Chrona's) opinion to not build Bloodthirster on bruisers. Yes, I'll give you that it does negligible things for stuff like Shen and Malphite, who don't scale particularly well with AD, but AD top champions without innate sustain (or even with) all benefit from Bloodthirster and its innate insane powerspike that makes bruisers incredibly relevant in teamfights.
(ohandbuildinghydraonVolimakesnosensei'mconfused)
(byenow)