I caught every Pokémon for my living dex in regular Poké Balls. It bothered me having so many in random ones, Master Balls, and other crap like that. I only use other balls for breeding.
Dude same my entire living dex is just in normal Poke Balls, though I did consider doing the Ultra Beasts in Beast Balls I ultimately decided against it.
(other than ones I can't control like Mythicals in Cherish Balls and such)