There are no widely known, officially supported projects (like LineageOS) specifically for the A01 Core.
Based on your search for "samsung a01 core custom rom portable," the Samsung Galaxy A01 Core is a low-budget device powered by a processor . samsung a01 core custom rom portable
After scouring XDA, Telegram, 4PDA, and GitHub: There are no widely known, officially supported projects
The A01 Core typically runs on limited RAM (1GB or 2GB). Samsung's One UI, even in its "Core" version, carries background processes that can choke this hardware. Reduced Bloatware: Remove pre-installed apps you never use. There are no widely known
If you are looking for a stable, portable-friendly experience, these are the top choices:
Because the A01 Core is a budget device with limited RAM (1GB/2GB), "light" ROMs are preferred.