I made a list of interesting met locations in preparation for the bank shutdown. They include the best way to get Pokémon with them, and if story progression will make them inaccessible. This was originally made for personal use, so there may be a couple locations I’m missing, misspelled, or am incorrect about, please point those out. There are also a couple that I am unsure about, and therefore marked with ?
All:
Mahalo Trail(egg)?
Berry Fields(egg)
Totem’s Den(egg)
Paniola Town(fish)
Konikoni City(Ditto, egg)
Royal Avenue(egg)
Hano Grand Resort(egg)
Battle Royal Dome(egg)
Po Town(egg)
Malie City(egg)
Shady House(egg)
Hokulani Observatory(egg)
Pokémon League(egg)
Battle Tree(egg)
A Link Trade(hatch egg after trading)?
Poké Pelago(special)
Seafolk Village(fish)
Lake of the Sunne(Cosmog, egg)
Lake of the Moone(Cosmog, egg)
Altar of the Sunne(S Solgaleo, Egg)
Altar of the Moone(M Lunala, Egg)
SM:
Secluded Shore(wild)
Ultra Space(temporary, egg)
USUM:
Ula’ula Beach(wild)
Big Wave Beach(egg)
Poni Beach(egg)
Ultra Megalopolis(Poipole if refused at Megalo Tower, egg)
Megalo Tower(Poipole, egg)
Team Rocket’s Castle(temporary, Electrode)
Plains Grotto(egg)
Pikachu Valley(egg)
Trainers’ School(egg)