I've been back into Let's Go, Eevee! the past few weeks while taking a break from shiny hunting Guzzlord in Ultra Sun. I've been re-battling the gym leaders (plus Mina) for Poke Ball money because I've been shiny hunting a lot-- and boy do these hunts go a lot quicker than they do in Ultra Sun! Since I've been back into it the last few weeks, I've found shiny Clefairy, Onix, Ponyta, Geodude, Zubat, Doduo, Tangela, Mr. Mime, and Chansey. I'm now currently hunting Lapras!