Pawn Shop/Ranged

Small Arms, proficient for everyone.

Longarms and Heavy Weapons, proficient for Soldiers. Sniper rifles are not included as they're too pricey out of the gate even if Operatives have specialization.

Grenades are proficient for Envoys, Mechanics and Soldiers. But being nonproficient is a -4 penalty and throwing at the ground is a base AC of 5. Proficiency isn't as important here.