No. Let's Go, Pikachu!/Let's Go, Eevee! was only programed with all Generation 1 Pokémon (Bulbasaur - Mew), Alolan forms, Meltan, and Melmetal.
So anything that aren't the Pokémon above can't be transferred. Maybe in the future, Let's Go, Pikachu!/Let's Go, Eevee! will get an update every couple of months to add one region.