If you didn't select to preserve your user accounts, then all your files should be alongside your old system files in:
/Previous Systems/Previous System 1/
That location should mirror your old HD locations, with System, Library, and Users folders, among others. Your old Home directory files should be under:
/Previous Systems/Previous System 1/Users/<username>/
Comments
/Previous Systems/Previous System 1/
That location should mirror your old HD locations, with System, Library, and Users folders, among others. Your old Home directory files should be under:
/Previous Systems/Previous System 1/Users/<username>/