Man1 - xkbcli-list.1
is a commandline tool to list available model, layout, variant and option (MLVO) values from the XKB registry.
Positional arguments provided on the commandline are treated as XKB base directory installations.
Print help and exit
Increase verbosity, use multiple times for debugging output
Load the ruleset with the given name
Do not load the default XKB include paths
Load exotic (extra) layouts