My stuff is all in docker-compose with a stack/service structure, so listing it is as simple as running tree, and reading the individual YAML files if I need in-depth details.
Just echoing what others said, Plank does not run on Wayland. You can install the "Dash to Dock" Gnome extension for a very similar experience (minus widgets).
If using KDE, consider replacing Guake (which is GTK) with Yakuake (Qt).