Yeah, Strike Force's affiliations make no sense. Young Avengers consists of two actual canon YAs, Kate Bishop and America Chavez, two Champions, Kamala and Miles, plus Squirrel Girl (a New/U.S. Avenger) and Echo (who's actually a main team Avenger like Miles and Kamala once were, and I'm pretty sure is NOT a teen hero like the others). They're using the category for any younger hero who was on any Avengers team, rather than specifically for the YA team from the comics. Cassie Lang, in the game as Stature, isn't a Young Avenger in the game, her category is Pym-Tech - Loki ought to count as a YA as well, but of course doesn't. Kamala actually also has the Inhumans tag, Miles has both Web Warriors and Spider-Verse (the latter is basically Web Warriors + Sinister Six i.e. Spider-Man rogues combined, and thus is meaningless). You forgot to mention Ironheart's team synergy, which is Power Armor.
Bionic Avenger doesn't even make sense for Viv - she's never been an Avenger in the comics. Hulkbuster doesn't really make sense either as that's just an alternate version of Iron Man! They also removed Vision's synergy with Scarlet Witch when they added Viv and the Bionic Avenger team to the game.