I like everyone in Poppin' Party though too, so it's kind of tied for me with Afterglow.Roselia has Sayo, though, who's absolute trash.
I like them all as well, but Afterglow is on a whole other level. I like all five of them.
My rankings?
Poppin' Party/Afterglow
Roselia (I like Lisa too much)
Pastel Palettes
Hello Happy World
That being said, even though HHW is ranked last, it doesn't mean I dislike them. I like all of the bands, just some less than others.