For completeness:
In Linux WSL (Windows Subsystem for Linux) Ubuntu 22.04, there is no single default terminal.
It depends on which application (e.g. cmd.exe, windows terminal exe, powershell.exe, tcc.exe, ...) you used to start WSL.
In WSL it typically runs inside Microsoft Windows conhost.exe (e.g. when WSL was started via JPSoft tcc.exe here)
otherwise e.g. windowsterminal.exe, ...
Typical output of typing $TERM on the WSL command line is then indeed
xterm-256color
or otherwise
xterm
Note: but this is probably more pointing to its compatibility (e.g. colors, ...) with the 'xterm' terminal program,
because I had to install xterm when earlier typing that word on the WSL command line, so xterm
is or should not be default present and installed and used.