I think Javan and Pileated were at least once considered phase-in species, but I don't see that happening. The Javan population seems to be only 2-3 pairs and the European program is still trying to get its footing with so much of the breeding population owned by a man likely to try and chuck them into the wild to die for his own publicity at any moment, so we can't expect imports from EAZA. Tbh it'd probably be best if our few breeding animals were sent there. Pileated I believe has a larger population but most of the animals are at Wildlife World, a place the AZA probably plans to further distance itself from.
All the others are phase-outs sadly. I'm pretty sure Hemker's current animals are the ones LA had, too. There are about 11 hoolock left at the GCC, but all the females are on birth control. They haven't been able to place any of the young they've bred and don't plan on breeding them anymore. When I visited in 2018, the owner was even open to the idea of shipping them back to wherever they initially came from. A shame really, but can't say I blame her given their limited space and the fact that no one else wants to work with them.
~Thylo