Not who you replied to but I haven’t had any issues with a 3000 series card and LTSC, but I only used it for a whooping 12 hours since I got the card (I do 99% of gaming directly on Linux) so take my answer with a grain of salt.
I might be missing something but can’t you just manually download the drivers from the Nvidia website on LTSB?
Yea they keep all the data. I deleted everything on my account when the whole shitshow happened and then GDPR requested the data associated with the account and it was all still there. And when I requested that they delete that too they outright refused.