However, I can help you with:
No one has claimed credit publicly. However, using the Wayback Machine on defunct ROM hacking forums (2005–2008), I found breadcrumbs. 1636 pokemon fire red u squirrels rom extra quality
, are built specifically for FireRed v1.0. Later official releases (like v1.1) change internal memory addresses, making them incompatible with these fan patches. "Squirrels" Quality However, I can help you with: No one