In fairness, licencing reasons stop them from selling Iron Man (the same reason we won't be seeing the Figma versions outside of Japan), Kyoryuger hasn't been adapted yet, so there's a chance we'll see those when it actually is, and Akibaranger and Ryuuranger aren't Power Rangers so they fall outside of their contract with Saban, which is the downside to the special treatment MMPR has seen with Figuarts.
Gaim is the only real notable one and that could just be because of the shows massive popularity.