When writing comments, when i type @ i get a popup with tags.

I would like a way to show only valid phpdoc tags, and remove the clutter:

www.phpdoc.org/docs/latest/for-users/phpdoc/tag-reference.html

The fact they are not listed in phpDocumentor, does not make them invalid. PhpDocumentor may not support all. Try Wikipedia to show list of all tags and reference to other tools processing phpdoc comments.
BTW you can edit the list of tags -- it is in config files.