How many AESA Radar warplanes does China have available? As far as I know, J-20/16/10Cs have it.
Surely new block J-15s use AESA since these fighters are newer than J-10C, J-16, and J-20. Since they're not phasing out J-15 with introduction of J-35, and if anything J-16D and J-15D have their own place in orbat. Can soon add J-35 to the list. J-10B could have been AESA but there's only a few dozen of that block and hundreds of J-10C.
Overall it would be over 500 fighters (4th and 5th gen) with AESA depending how many J-20s there actually are. I am assuming around 100 J-20s and that's a conservative estimate by a long shot. This doesn't count J-35 assuming none in service or any new J-15 with AESA, and not counting J-16D or J-11BG which we know are in service with modernising to an AESA radar. There would be handful to dozens of these J-11BG with AESA.