If there were a similarly focused antagonistic female Pyroar that cut off from the pride; I would expect it to end up with Team Rocket as their latest powerhouse since just Phantump and Inkay is lacking even if Team Rocket appearances are scarce nowadays.
Even if there's a lonely female Pyroar here (which we have no mention of), I don't see why TR has any real chance of ending up with it. Also TR doesn't own a Phantump. :/