is there only one place per GC for GC Leves?

[Dark_Legacy]

Flames is in Drybone, Adder at Hawthorne Hut, Maelstrom i forgot.

But are those the ONLY places to get GC leves in the entire game world?

The ones you listed are the lvl 20-24 and 25-29 leves. For 30-34 Adder is south shroud camp tranquil, flames is south than little ala Mihgo, Maelstrom is east nosca at costa del sol. 35-39 all three coerthas at the observatorium. 40-44 all three coerthas whitebrim and 45-49 mor dohna at saint conachs find.