Armor Permutations for different species? Ranks or Armor Peices

[I<3Grunts]

So what im talking about is what species should have Ranks like the Elites in reach or Armor peices like spartans in 4.

Heres what i think:

 

Spartans: Armor Marine: Rank ODST: Armor

Elites: Armor Grunts: Ranks Jackals: Ranks Hunters: Ranks Drones: color change only

Brutes: Armor Skirmisher: Rank

Promethean: Ranks

 

Also the elites would have peices from 2, 3, reach, and 4