I would think based on this, you most definitely don't want WotC treatments of classic settings, unless they're in a very retro style, but even then there are probably going to be irking points for you. Maybe you can satisfy your hankering by searching for obscure and out-of-print stuff in the back catalogue of AD&D?You know, now that I've made this post and have been reading and thinking on this (the OP was an impulse) I realize that I probably wouldn't like a more modern version of the classic settings. I'm a social conservative and am allergic to the dominant woke culture that WotC has wholeheartedly embraced. I'm not inviting nor will I engage in a political conversation here, people believe what they believe and have every right to do so, but I've stopped purchasing the newer books over it. Now I have to ask myself why I'm wanting them to revamp the old settings in view of their new philosophy, and the truth is I'd rather just play the old settings themselves.
Furthermore, as I'm sure you know, there are a ton of old school games and products out there, although not as many that make material for 5E. The OSR is alive and well, with new stuff coming out. Recently I've been getting into reading the Megadundeon books from Hack and Slash Publishing, which are very old school but also offer dual stats for Basic and 5E. I also really like the Planet Eris Gazetteer, which is very old school and has one of the best world maps I've seen.
There's new stuff out there with an old school vibe, but you've got to dig for it.