C-Sky and Andes NDS32 were popular enough to be supported by both GCC and the Linux kernel, both switched to RISC-V. ESP32 switched to RISC_V for all new chips.

Interestingly Synopsys's ARC's latest version ARC-V is RISC-V.

I think all major FPGA vendors now offer fully supported RISC-V soft cores either alongside their older proprietary ISAs or as the latest upgrade. Several (e.g. Microchip and Gowin) have included real RISC-V cores inside FPGAs.