I strongly believe that it should not be included within the q.-unq. other tyrants table. The usage of the page is primarily to inform on the final game, with other anecdotes being separate. If one were to, say, overlook the addendums to each tyrant (unlikely, with there being three in that particular table, granted) one could make an informed conclusion of how many tyrants are actually in the game, in turn throwing suspicion on other tyrants on the page and their relation to the final game. While Bruno does qualify as a specical tyrant, its altogether absence save one offhand mention clearly distinguishes it from the comparably more mainstream Phanatos and Nahum. Having its own category as a beta tyrant would solve this problem but make the page a bit more scattered. Therefore, I believe it is in the page's best interest to remove Iron-Fist Bruno from the lists entirely.
Indeed, a Iron-Fist Bruno page was made during the early builds and presentation of the game. After the release of the game and pointing out Iron-Fist Bruno was removed and remained a beta enemy, the page was deleted since the community had decided to move all beta content in the List of Xenoblade Chronicles X pre-release and unused content.
Fair enough. I don't still don't see why it warrants its spot with all of the others, though, other than a minor mention above the list, perhaps a hyperlink on its name to go to its section of the beta-content page.