A couple of points. The first is that the AIM-174 and the R-37M are not standard AAM missiles. They're absurdly huge weapons akin to large cruise missiles shrunk down to be launchable by aerial platforms. These are specialized munitions and thus will have relatively limited applications. The PL-17 is a bit of a unique missile because it's significantly larger than standard AAMs, but it otherwise functions like them and can be employed pretty much the same way. The J-36 has a weapons bay that seems to be specifically designed to accomodate the PL-17, but the AIM-174 and R-37M are probably far too big to fit internally into a fighter.AIM-260, their answer to the PL-15, is confirmed as likely too expensive to use in large numbers:
“Look at AMRAAM as your capacity weapon. … It’s the affordable” weapon, said Norman. JATM, on the other hand, will be the “kick-the-door-down, very expensive weapon.”
Given the late-90s export variant of the AMRAAM sells today for $3.5 million each when ordered in bulk quantities of at least ~1000 units, I wonder what the price of AIM-260 JATM will be. Given the 25+ year technology gap and the Raytheon quote above, I speculate it will sell for ~$15-25 million each. Given the OBBB includes funding for procurement expected to be partial prepayment for long lead time manufacturing inputs, I expect LRIP in 2026 to 2027, depending on delays by their suppliers.
This link also seems to confirm AIM-174B is much too large to be held internally. So it's out of the question for use by F-22 or F-35. Maybe it will fit in B-21 and F-47 (maybe not even in F-47).
The thing about the price of the AIM-260 is very bad news for the Americans. Western doctrine seems to treat the long range AAMs like the AIM-120 and Meteor as specialty weapons already. The Rafale tends to carry only 2 Meteors while the AIM-120 has a low production rate - Raytheon makes about 1200 a year. In comparison, China (and probably Pakistan) treat their long range AAMs like standard weapons, so more planes carry them and they and will probably fire them off much more generously. China's automated PL-15 factory probably build that same 1200 units a month.