I've done mostly Sanus XF228 plus VMA202 plus Sonos wall mount kit

It's still a science project as I carry around a small supply of 1/4-20 x 3/4" flat head screws/nuts and washers to mate the wall mount kit to the vma202. Have to play around with the brackets and I believe I reverse the L shaped bracket at the top of the speaker. Once that's done the whole thing slides up tight to the bottom of the set and is easy on/off if needed.

Sound bar mounting to articulating TVs has got to be one of the biggest PIA.