I have made a few guitar amps and tweaked a half dozen of my own and other amps. Here are the amp projects.
Mini Major (down scaled version of Marshall Major 2025)
Fender Pro Amp clone (6G5-A brownface 2019-2020)
SLO clone (version of Soldano SLO, 2008-2009)
Two Stroke (single ended amp designed by Dave Hunter 2006)