If it's helpful - I saw timaeos post on the Fedora KDE Matrix channel today that apparently dnf5 doesn't list groups tagged as "environments" when using group list - those have to be listed using the command dnf environment list.

However, for some reason, the commands to actually install those environments are still dnf group install

Sorry, I totally missed this pagure issue and ran into it on my own while messing with toolbox.

As @johnandmegh mentioned, the listing of the environment is separate from the group list now. It's... not clear what benefit this is. We can make the base group that the environment tag uses visible in the group list but there is a possibility for confusion because that base group won't necessarily provide all of the applications expected in the base Fedora KDE / kinoite experience.

The installation instructions on the wiki have been updated

We can ask the SIG if they'd like to make the base groups visible in the group list since the dnf5 environment list separate makes it less discoverable
cc: @siosm @ngompa @farchord

Any updates on this?

This is unfortunately a dnf5 thing, it probably needs to be bubbled up to them. https://github.com/rpm-software-management/dnf5