>>471346766 for an ice type gym
I would want to be one of the gyms you fight midway through the game, this is so this section can be a turning point for the difficulty. The Glalie on my team would set up entry hazards and hail before the other Pokémon came in to battle. I would imagine you find out the intentions of this regions evil team after you beat the gym.
I'm not good at cropping, so here's the link.
https://richi3f.github.io/pokemon-team-planner/national_dex.html#sandslash-alola+glalie+mamoswine+froslass+avalugg 