Ok this is a serious long shot, but I thought I would try.
I bought a used pair of Totem Tribe wall mount speakers, but the seller neglected to include the brackets. So if anyone has a pair, let me know.
Some fancy ones are angled, like this
https://acoustic-tech.com/shop/totem/totem-tribe-angled-bracket/Other ones are flush against a wall. I'd be open with either approach.
I believe all tribe models use the same brackets.