I'm still working my way through learning it all but I use HFB and do not use RMod. I've added AH64's and Avengers through the traders as well as a slew of launchers, all with no issues or problems. The bought Apaches and Hummers lock just like any of the normal vehicles. I'm quite sure I could add in the A10 as I've spawned it in testing without issue.
Edit: this idiot poster just realized this is the Overwatch forum section. Please point your finger and laugh at me now.
if you ever feel like sharing I'd love to know. I use infiSTAR and there are some jets and heli's that must be specific to overwatch on the list that you can't actually spawn. I've help admin an epoch server and those particular jets are not on the epoch list. Also there are some tanks. I'll come back and edit this when I have those class names in case anyone is interested.