This is why Naughty Dog is working on remakes instead of a real next gen game
The U4+UTLL remasters are being done by Iron Galaxy, the TLOU1 remake was being made by the 2nd Sony San Diego studio, that were people from Sony's Visual Arts Service Group (the ones who make the cutscenes of the Sony games and also work as art/animation support team).
That San Diego team pitched it because some of them wanted to make their own project instead of working as a support team, pitched first to make CG movies/tv series of Sony IPs, Sony declined them and asked them to focus on gaming. Then they thought about making their own game, and in order to reuse material they did for the tv pitch they thought about an Uncharted 1 remake because they thought it would be easier for them as their first game and would be easier to get greenlighted by Sony. Then they realized they needed to update the gameplay and many other things, so thought about a simpler remake, some other game that wasn't that outdated: TLOU1, one that also they could bundle with TLOU2 PS5, got greenlighted and they started to make it. ND only provided them material and overviewed the usage of their IP.
Time later Hermen Hulst joined his current position, saw this remake, didn't like it and didn't like they spent a huge amount of budget and resources on it, asked them to switch their roles to complete the last stages of development of the remake: ND as lead team and San Diego VASG team going back to their original support role.
So only a tiny portion of ND is working on the remake. After TLOU2 the other ones have been mostly with the TLOU2 MP game and at least during some time with an Uncharted spn-off with help from Bend, until Bend got their next new IP greenlighted. They also made some TLOU3 preproduction (at least they have the story, Druckmann wrote it) just in case somewhere in the future they decide to do it. And who knows if they also started to work on a new IP, since they said they would like to work on new IP and to continue working with their existing IPs like Uncharted or TLOU.
Neil has been wasting his time doing the TV series instead of prototyping their next big game IP
He's co-president of Naughty Dog, Creative Director and Writer, his job isn't to prototype stuff. They have been busy with TLOU2, the TLOU2 MP game and seems that also an Uncharted spin-off (which may be cancelled). He wrote the main story of TLOU3 to have it ready if in the future they decide to develop it, so pretty likely he also wrote ideas for different new IPs, that later the rest of the team and Sony would have to greenlight.
I hope he gets Brie Larson to play Abby just to piss people off.
Jason Momoa would be a better fit.