Since you have a Pro subscriptions I would suggest simply making a ‘maps’ game and using the Transmogrifier to port them into your active games when needed. Then you could just use a naming system (Forest-Winter-Bridge-Daytime; Dungeon-Goblins-Dark; etc.). That has the added benefit of not taking up space in your active games. Whenever a player joins a game, all assets are loaded into active memory, including maps, tokens, archived items, etc. so this could help with loading times if that’s ever an issue for you or your players.