Images with an "old nostalgic internet aesthetic", are characterized by having or replicating old 3D graphics from 1990s to 2000s, simple graphics from the time. Also the mix of "internet culture", for example windows 95.98 tabs, vista, aesthetica frutiger aero and the insertion of anime and games.
You can only publish Vintage CGi images or vintage CGI + internetcore, it doesn't matter, it's a Vintage CGI topic.
Site with a strong example of wallpaper with vintage CGI:
https://visualparadox.com/other media that well represent the combination of internetcore + Vintage CGI
game:
https://disillusionst.itch.io/disillusion-stvideo:
https://www.youtube.com/watch?v=BxoSPfXOHCMENA:
https://www.youtube.com/watch?v=juBv2XWnwt8 