I have a handful of limited edition CryptoKitties from December 2018. They cost me around 0.02 ($2) each and after reaching a high around 0.5 ($500) last year and now worth around the same 0.03 ($50). Personally I wouldn't recommend these as even the limited edition collections (~1K only) there are about 40+ of them and therefore no real demand (as of yet). Probably better off with a Gen0 / Gen0 virgin. I otherwise didn't bother selling them as they were my first ever NFTs so happy to leave them be for a while in case a demand returns for these old school NFTs.

I'm otherwise a big fan of MoonCats and hold a decent bag. They not only pre-date CryptoKitties but there are only 25K of them, as opposed to the million of generic CryptoKitties that exist (that more or less killed the collection imo). These I plan to hold long-term as they only started trading in early 2021, despite originating from 2017 (close to CrytpoPunks date), so still has a few more years of trading before value stabilises/increases imo. It's also one of the few (or only?) collections which isn't based on attributes but accessories, that were/are developed by the community, so have a handful of limited editions accessories.

I did previously swing trade some of the more modern collections, due to the 10x gains that were occurring within a matter of days, but wouldn't bother with any of them anymore. The NFT market is general is now over-inflated with thousands of collections as you pointed out (very much like the shitcoin space). So I think only long-term the NFTs that are at least 4-5+ years old stand a chance long-term.