I scout as much as possible for kotori cards and only slightly less for kanan cards. I honestly have the hardest time trying to rank muse so my best idea of it is like this.
/Kotori>Nomzomi>Rin> Umi>Maki>Hanayo> Honoka>Eli>Nico/
Aqours is a lot easier for me to rank so here it is.
/Kanan>Ruby>Mari> You>Riko>Hanamaru> Chika>Yoshiko>Dia/
I'd like to say I like all the girls equally but the stats on my account dont lie. Kotori is my best girl and I have really good luck when I need it. I generally get all my URs by screaming "Rate up is not a lie" and just looking at the screen while I solo everything.