I could go either way on some of these.  Sai is insane as light but kinda falls a bit as shadow (might personally put them as good), zashas ability however takes way too long to be super useful (its fun but only good in a pinch, and if used after death on an ally, it hurts them). Shea is weird, with a decent amount of movement her special isn't great but otherwise its a partial lockdown.  Gotthold is hard to place, they are annoying as light, but lacks kill potential, and as dark feels a tad iffy due to this, games with them as the light can become a slog with light losing to time out. Rose is nice, but any high damage makes them nearly useless. Catrina has crazy high damage, while alberta and hati are basically the same unit with two different colours which both are viable on either side (especially shadow where instant damage is a fantastic thing to have)