I played them recently on my Series X using backward compatibility with the original discs. Everything loaded fine, and they run smoother than I expected for older titles.
I had the same nostalgia hit, so I went back to replay a few. Some of the older ones still hold up if you don’t mind dated graphics. I’m also curious how borderlands 4 will stack up, since I’ve heard they might focus more on single-player action like the early Call of Duty titles. Would be cool if it mixes in arcade-style missions again too.