Hitting the rear delts and upper back together:
One arm DB row, bracing the free hand against whatever. Keep the elbow wide out and in line with the shoulders. If doing the BB version, than wide grip, and again, keep the elbows in line with the shoulders.
Hi-pulls to about nipple high. Either BB or DB. Also Behind the Neck chins, trying to touch the back of the neck each rep. The wider the grip on most back exercises can influence the rear delts more. A middle to narrow grips seems to activate the lats and back more for most people. In any case, try different hand spacing at first to see what gets it done for you. Every one's body mechanics and responses are different. Hand spacing can also apply to face pulls, though most guy's do it like the video points out, allowing the towel to expand the grip. Face pulls, any way done, can be a very good movement.
Hitting the rear delts: though as we all know no muscle group can be isolated or separate from any surrounding or even opposite muscle group. But better focus can usually be achieved from some exercises.
Reverse Pec Dec. Keeping the elbows high and in line with the shoulders. And the one arm DB bent over rear raise. Lot of guy's like to swing the DB up, in this position. Seems to work very well for them. Thats called cheating. But than again, if it brings more muscle size to you....so what? Good Luck.