Diablo II: Resurrected supports cross-progression. You can take your Switch save file, move it to a PC via an SD card or data transfer, edit the file on the PC using the Hero Editor, then transfer it back to the console. The process is technical but doable.
: The classic tool used for the original 2000 game. While it cannot directly open D2R files, you can create a character in the legacy version and then copy the file to your D2R folder. How to Edit Your Character This guide uses the D2Runewizard hero editor for diablo 2 resurrected
: For those who prefer not to use external tools, this mod allows you to edit character stats and gear directly within the game interface. How to Use a Hero Editor Diablo 2 - InGame Hero Editor MOD!!! - Build Any Character Diablo II: Resurrected supports cross-progression