I honestly don't think Pokémon who had their movesets changed in Home have any more of a chance to be added to the DLCs. As was said earlier, there are some Pokémon in SwSh right now that do not have changed movesets due to TMs/TRs, so a Pokémon being added to the games isn't guaranteed to have a changed moveset (only if it makes sense for a new TM/TR to be able to be taught to that Pokémon).I hada list from a while ago, I think these are the only Pokemon that had no actual changes to their TM/TR moveset (just about every pokemon got Swift & Endure added),
Gen 1: 5 (Pidgey, Pidgeotto, Pidgeot, Paras, Parasect)
Gen 2: 6 (Unown, Teddiursa, Ursaring, Smeargle, Stantler)
Gen 3: 16 (Plusle, Minun, Gulpin, Swalot, Spinda, Cacnea, Cacturne, Zangoose, Castform, Kecleon, Tropius, Chimecho, Clamperl, Huntail, Gorebyss, Luvdisc)
Gen 4: 35 (Turtwig, Grotle, Torterra, Chimchar, Monferno, Infernape, Piplup, Prinplup, Empoleon, Starly, Staravia, Staraptor, Bidoof, Bibarel, Kricketot, Kricketune, Cranidos, Rampardos, Shieldon, Bastiodon, Pachirisu, Buizel, Floatzel, Glameow, Purugly, Chingling, Carnivine, Finneon, Lumineon, Phione, Manaphy, Shaymin, Arceus)
Gen 5: 33 (Snivy, Servine, Serperior, Tepig, Pignite, Emboar, Oshawott, Dewott, Samurott, Patrat, Watchog, Lillipup, Herdier, Stoutland, Pansage, Simisage, Pansear, Simisear, Panpour, Simipour, Blitzle, Zebstrika, Sewaddle, Swadloon, Leavanny, Ducklett, Swanna, Deerling, Sawsbuck, Alomomola, Tynamo, Eelektrik, Eelektross)
Gen 6: 23 (Chespin, Quilladin, Chesnaught, Fennekin, Braixen, Delphox, Froakie, Frogadier, Greninja, Scatterbug, Spewpa, Vivillon, Flabebe, Floette, Florges, Skiddo, Gogoat, Furfrou, Skrelp, Dragalge, Clauncher, Clawitzer, Hoopa)
Gen 7: 10 (Pikipek, Trumbeak, Toucannon, Yungoos, Gumshoos, Crabrawler, Crabominable, Oricorio, Minior, Bruxish)
not that Unown & Smeargle really mean anything....kind of dont get TMs anyway, and all.
Also, the DLC is slated to only add around 200 returning/new Pokémon to the Galar dex (assuming there aren't more DLC afterwards), leaving more than 250 Pokémon not included in SwSh afterwards. However, there are only 125 Pokémon in this list, meaning that some of the Pokémon not added to the DLCs must have gotten updated movesets.
It makes sense to me that if you're forced to convert the Gen 7 learnset of TMs for each Pokémon not present in SwSh into the Gen 8 system of TMs and TRs (which excludes multiple previous TMs and adds a lot more) for Pokémon Home, adding certain moves to their learnset that make sense with their concept and are now TMs or TRs isn't much of a stretch.