Bennet’s feat Air Support says “Put a Rocketman unit and a Rocketman Ace solo into play.” Etc.
Now we have both Crucible Guard Rocketmen and Rocketmen Gunners as units, is Bennet able to pick either of those two?
I would say yes because it doesn’t say “Crucible Guard Rocketmen unit” which is the full name of the basic unit, so just using the partial name “Rocketmen” applies equally to both “Crucible Guard Rocketmen” and “Rocketmen Gunners”.