MSYS2

// This makes UCRT64 the default shell
"defaultProfile": "{17da3cac-b318-431e-8a3e-7fcdefe6d114}",
"profiles": {
  "list":
  [
    // ...
    {
      "guid": "{17da3cac-b318-431e-8a3e-7fcdefe6d114}",
      "name": "UCRT64 / MSYS2",
      "commandline": "C:/msys64/msys2_shell.cmd -defterm -here -no-start -ucrt64",
      "startingDirectory": "C:/msys64/home/%USERNAME%",
      "icon": "C:/msys64/ucrt64.ico",
      "font": 
      {
        "face": "Lucida Console",
        "size": 9
      }
    },
    {
      "guid": "{71160544-14d8-4194-af25-d05feeac7233}",
      "name": "MSYS / MSYS2",
      "commandline": "C:/msys64/msys2_shell.cmd -defterm -here -no-start -msys",
      "startingDirectory": "C:/msys64/home/%USERNAME%",
      "icon": "C:/msys64/msys2.ico",
      "font": 
      {
        "face": "Lucida Console",
        "size": 9
      }
    },
    {
      "guid": "{ffffffff-14d8-4194-af25-d05feeac7233}",
      "name": "CLANG64 / MSYS2",
      "commandline": "C:/msys64/msys2_shell.cmd -defterm -here -no-start -clang64",
      "startingDirectory": "C:/msys64/home/%USERNAME%",
      "icon": "C:/msys64/clang64.ico",
      "font": 
      {
        "face": "Lucida Console",
        "size": 9
      }
    },
    {
      "guid": "{ffffffff-ffff-4194-af25-d05feeac7233}",
      "name": "CLANGARM64 / MSYS2",
      "commandline": "C:/msys64/msys2_shell.cmd -defterm -here -no-start -clangarm64",
      "startingDirectory": "C:/msys64/home/%USERNAME%",
      "icon": "C:/msys64/clangarm64.ico",
      "font": 
      {
        "face": "Lucida Console",
        "size": 9
      }
    },

    // ...
  ]
}