I like Gloomstalker a lot. They did not implement Umbral sight but you get a bonus action hide and a once per short rest invisibility instead. Dread Ambush is in there and it works very consistently, you basically get an extra attack that does extra damage to start every fight. I just got to level 8 and am currently Gloomstalker 5/Assassin 3. Surprise seems bugged though, it almost never triggers.
