I would consider the Hellcat and P365 to be Micro 9mm pistols, similar to a Glock 43, S&W Shield, or Ruger EC9S. Yes, the Hellcat and p365 have more capacity, but they are all similar in size. A Glock 26, CZ P10SC, S&W M&P 3.6 Compact, and the new M&P 3.6 Subcompact are all bigger pistols and not really in the micro realm.
In my opinion, the Micro 9mm’s are better for carry in terms of comfort, whether it’s IWB, OWB, or in a pocket. And a Glock 43 should carry better than a higher capacity micro in terms of weight due to fewer rounds.
In terms of how well you can shoot them, that is up to the individual. If a P365 or G43 is comfortable for you to carry, and you’re accurate, then go that route. If they are jumpy in your hand or too small for your hand, and you shoot a Glock 26 subcompact, or M&P 2.0 Subcompact better, then you need to carry the bigger pistol.