Since these are unofficial, you need to be very careful where you look. Here are a few community-projects that have been discussed online, which you can research further:
The primary goal of a "Lite" build is to maximize hardware potential. windows 8 lite 64 bit extra quality
Build approach (recommended, step-by-step) Since these are unofficial, you need to be
These versions often require significantly less disk space than the standard 20 GB needed for a normal 64-bit installation. Since these are unofficial
Microsoft ended support for Windows 8.1 on January 10, 2023 . This means no new security updates are being released, making any version of Windows 8 vulnerable to modern threats.