Who knows how many scenes they have on the shelves? And how many are raw footage awaiting editing? The Wm Higgins "Backstage" come out 6-12 months after the release of the base video.
Both 336 and 339 were filmed in the winter (no leaves on the trees, and people wearing jackets). I agree 339 is Denis Reed, but not so sure of 336 (no body hair - and if shaved, how long between filming of 336 and 339, or what order?).
MEN released Jarec Wentworth clips well after he was arrested.