Beyond Hell, SE 8.5

After grinding for a while I was able to solve without FCs. Curious about other solve paths, FCs included. Pic and link post basics.

https://sudoku.coach/en/play/SCv6_Y6Y9Y7X1Y89Y201X29Y8Z570a9b103X60a7b80a8b4010475Y_y_yyX10870a6b9Y80a57b80a6b_yy60A56A0c4dA52A0A44A60A120Ac3d56A0A116A0A108A0A0A88A40A56A0A240A0A232A154A0A0A40A104A88A0A208A194A26A344A0A0A588A856A580A84A582A144A464A80A260A0A848A0A244A740A0A184A28A6A524A520A674A168A0A680A168A12A262A588A840A674A168A0A520Ac6d580A76A580_0Ac80d0_0Ac80d0___yy0Ac80d0____