Updated the list.
Are you okay with the fact that Airborne Guards Troops arrive on the battlefield as a 6-person squad whereas Infiltration Commandos arrive as a 3-person squad? Moreover, the Airborne Guards Troops unit can either be upgraded for short range or long range while the Infiltration Commandos unit arrive with just submachine guns. I invite you to think logically about this situation.
AG are badly designed unit (they where supposed to be airdropped but proved impossible to fix animation) but that is not reason to badly designed other units.
IC comandos start with 3 entities because the start with SMG. The reason they where not given enflied is that the get "super brens" and would be OP at long range with them.
None of these solution are what I choose but there a logic behind them so "I invite you to think logically about this situation."