It looks like pastel, but the last 2 are more sanriocore. I think you should search things like "soft cute anime edits" in find pictures like those shown. Other words you can add or exchange for other words are pastel, sanrio, and kawaii. I hope this helped !!

Kinda a mix between Animecore, Kawaii and sanriocore maybe a little bit of Softie these aesthetics are all very close to each other