Does anyone know of record sleeves that fits gatefolds? I bought these and they don't fit my gatefold records.

I for one highly recommend discogs for tracking. Its pretty thorough, easy to use, and is a handy place to offload things you no longer want

https://www.amazon.com/Invest-Vinyl-Protective-Collection-Protection/dp/B01HHBA0PY

https://www.amazon.com/Sleeves-Vinyl-Provide-Collection-Protection/dp/B07CYJ5LFN

The InvestInVinyl are apparently good

https://www.amazon.com/Hudson-Hi-Fi-Sleeves-100-Inner/dp/B07FFCLNN7?th=1 the Hudsons are $79USD for 500 inner sleeves

https://www.amazon.com/Hudson-Hi-Fi-Record-Sleeves-Covers/dp/B07G2P3QKQ?th=1 $75USD for 500 outer