Wow, you've got a really nice game plan with tons of great reference to work from. Thanks for watching the content so closely! The thing about locks is that you want them to be resting positions, more or less. The frame is to control your opponent, to keep them from locking you, to move them and turn for a knee, but then you move into a lock position to kind of "slow down." Dieselnoi, when he has that horrible double lock and he's wrenching his opponent's heads around, he's resting. Slowing down a bit to catch his own breath while off-balancing his opponent and, through the discomfort and control, keep them from breathing. Yodkhunpon's hold, with the hand on the bicep, that's a waiting game. He's anticipating the knee so that he can elbow or turn. Also a kind of "slowed down" moment.
So moving into locks, or between locks, you want to see them as like the stones in a river that you can hop onto for a moment to make a plan. You don't stay there. That's not your end game. It's transitional, although you don't have to move off your spot too fast. So, when you're working on those different locks, shoulders from Satanmuanglek and head from Tanadet's long clinch, work on them by getting into and out of them. Make it a "full range of motion" practice, instead of a drill. To feel the edges, how to move in and through them.
I also advise you to take a look at Burklerk and Silapathai, who both love to snuff the clinch because they don't like to be in the clinch. If you're really into learning to clinch, learn how to get out of it, too. Because people will use those tricks against you, but it also allows you to move a lot more than if you only learn the dominant positions. In those two examples, Burklerk is showing how to stop someone from being able to grab you - nearly at all - with the way he locks out the shoulders; this also works great for killing punchers and elbows. And Silapathai's version is slithering out of the way with great turns - Karuhat does this, too - which allows you to change position quickly and get your own lock, if you're actually trying to clinch.