Yes, the ones that have the value "No_Sound" won't play anything, e.g. "NONE" (obviously) and ABILITY_NOT_READY
And the link from the Wiki is an older version of the files that Dan had linekd above: EsoUI\Libraries\Globals\SoundIds.lua
So better use the actual file contents.
They are available at github e.g.
https://github.com/esoui/esoui/tree/master/esoui
->
https://github.com/esoui/esoui/blob/...s/soundids.lua
Thanks Sharlikran for mentioning the points 4 and 7, will update the list!
I think 7 should have been no custom sounds then^^