Legendary/set items. Amulets, rings, 1h weapons, and gloves are really the only items that the majority of players dont use a legendary for, so thats all I pick up. But I spent my first 100 paragons levels barely picking up any rares.
I pick up all bracers, shoulders and gloves. Then ofc all rings/amus and then only 62+ items with the exception of 2handers, they're not worth it imo. At first I had to ctrl-check everything but now days you learn the items name.