So that screenshot doesn’t clearly show them under “tags” huh??? I know they aren’t the same thing as “tags” such as you are defining for web search related things. As I said which apparently you don’t get, when you create the release profile, you add that as a “tag” in sonarr/radarr for it to be applied. You aren’t answering the question so thank you for trying.
It shows tags, but you have no idea what you are talking about and clearly have failed to read anything in the UI or wiki, yet seem to respond with a know-it-all attitude.
Literally told you to use release profiles and that tags have nothing to do with anything by themselves. But apparently you won’t read the docs nor look at the UI itself.
Tags - Note listed with each tag is what type of object it applies to
Settings Page Describing Tags
Release Profiles - Not Tags, rectangle showing a tag in use
Official Wiki explicitly stating that what you think Tags are, that actually release profiles
https://wiki.servarr.com/sonarr/settings#release-profiles
Official Wiki explicitly explaining what Tags are
https://wiki.servarr.com/sonarr/settings#tags
Once again please explain in detail how a tag by itself (i.e. without being in a release profile and a series) does not anything at all for controlling upgrades. That literally does not exist in the docs, in the ui, nor in the code.
Now if you were asking how to prefer x265 versions and given Preferred Words are always an upgrade, that answer would be to create a Release Profile preferring - or must containing if you wish - the following Regex should do it /[xh][ .]?265|\\bHEVC(\\b|\\d)/i
However, given that is not at all what you’re asking and you’re insistent as such. I guess that will not solve your issue, so maybe do not use it.