How to build graves and draven?

as far as the adc changes go draven and graves become kinda unique which means that itemization does not support them as much as it did atm we have infinity edge carries which tend to dominate the game (tristana oh boyyyy ,jinx,cait ) triforce carries who tend to fight with ie carries on the field (kog,corki and ez, one wariant of lucian build) and youmu+botrk carries which are usualy more bursty than the others (other lucian build, twitch, vayne )

draven is an adc that scales mainly with ad, before the changes his main item was a bloodthirster which amped his q quite much the similar case was also graves, his burst came from skills which were not amped by youmu steroids the thing is that i dont know what to do with those carries blodthirster as first item will gut you (you get a shield that will be completly destroyed by one crit from ie ) infinity edge is not so strong as it is on true autoatackers while your kit does not realy support triforce nor botrk youmu combo

i personaly like draven and graves but i kinda get confused in itemisation now, since now there are actualy diferent builds for ad carries besides the standard bloodthirsted or ie rush we had before