Wait, not even the *starters* were in? Galar was even more ignored than I thought, wow.
After Origin Dialga/Palkia, I can see the Crowned dogs making a debut, just like the Kyurem fusions.
The only Galar Pokemon in the game to this point have been: Skwovet, Greedent, Woolo, Dubwool, Falinks (for some reason), Perrserker, Obstagoon, Runerigus, Mr Rime, Sirfetch'd, Zacian, Zamazenta, Zarude, Regieleki & Regidrago.
The cross-gen evolutions were released around mid-to-late 2020
The squirrels, sheep, falinks and wolves were released August 2021 I think as a Worlds tie in, Zarude later that year as a movie tie in.
The regi were released in the first half of 2023
They have released every Galarian regional form (including the legendary birds) aside from Corsola, though. So that's nice?
I think the general theory has been they didn't want to "leap ahead", so they just "focused" on variants and their relatives so that the latest games still had something. With the 2021 release just being a tie in.
Obviously with Gen 9, they decided to actually strike while things were relevant. iirc Masters - which also kind of put Gen 8 on the backburner for a while - also immediately hit Gen 9 around that same time. I could see this being GameFreak influence, like hey we really should have a proper release of these Pokemon this time.