Obviously Wise Deer is first, and then Ursa, but then I don't know. What is the order in chronological order of the mounts and which region do you get them in?
Wyrdeer - Obsidian Fieldlands Ursaluna - Crimson Mirelands Basculegion - Cobalt Coastlands Sneasler - Coronet Highlands Braviary-Hisui - Alabaster Icelands
Ride Pokemon (Bulbapedia)
