EVO suits let you see people through walls and what they are wearing/using, aswell as move faster
Juggernaut suits give you 1000 health and 2000 armour, they reduce your speed significantly, but jump higher
Regen suits let you heal people
Combat suits give you better movespeed and damage
Advanced combat suits allow you to create a "bubble" which cant be penetrated from the outside, they give you better health and armour.
Visor suits give you a visor that fires a laser that deals high damage, they give you a decent amount of health and armour too.
Mummy suits start off with quite terrible stats, but have 3 lives total, after dying, you come back stronger.
Theres definitely more but i cant remember many of them, try find out yourself