Theoretically it is possible but practically done bindings, ZWave in particular makes it very difficult. The problem with ZWave I believe is that the format of the Thing for almost every single device is different making documenting it untenable.
Look at the readmes for each binding you are using. If it always to fully document its Things you should be good to define everything in files.
They do show but you can’t change them through PaperUI.
I don’t know anything about tags.
A lot of people manage automatically discovered Things in PaperUI but define all their Items in text files. This let’s you get past the problem I mentioned above but still have full control over your items at least.
Ok, automatically detected “stuff” I live in paper-UI and I add the corresponding items to my items files.
And I can add the tags and groups in my items file.
Found the group functionality in PAPER-UI (Configuration, Items, New Item, Type:group).
Thanks for helping a beginner, growing the community, you are great!