The only "cheaper" knife in the testing video series is the Otonashi vs XHP Recon 1 posted, the rest are more expensive than the CS counterpart they tested against.
The only real potential contender in your list is the Adamas, and maybe the Spyderco ball bearing lock(e.g. manix 2).
For Adamas, i can see it holding a lot of weight, but may not be able to repeat it, as its liners around the axis lock seem like the weak link and can deform making the lock not 100% functional after hard use. Look at Benchmade's own Adamas test video, and also search for "Vininull adamas test" on youtube, both showing liners deformation.
Jankerson had a torture test video for Manix 2, and the same test for American Lawman. You can tell the difference, albeit Spyderco has since improved their ball bearing lock geometry.
I never understand why people regards Framelock as "strong". The only use case when it may be considered strong is when the hand is holding the lock tightly, or when the lock is stuck in the open position contacting 100% of the tang, making it impact resistant. Despite that, the lock cutout will fail under heavy load provided that the lock does not slip first, either by crumbling(for soft material like Ti) or by snapping off(if heat treated steel like Otonashi shown in today's video).
Remember, a lock is only as strong as it's weakest part. The extra thickness of the frame lock only provided more surface area contacting the blade tang, and may help in preventing slipping during shock(more surface = more friction), but is ultimately not the deciding factor for the ultimate strength of the lock. Some liner lock may actually be stronger than frame lock as the liner is thicker than some ultra thin framelock cutout. I remembered Sal from Spyderco mentioned somewhere in their forums that the Ti-framelock Military does not have any strength benefit vs the standard linerlock Milie.
Now, another misconception about steel insert. The are meant to increase lock "longevity". They are not there to add "strength" to the frame lock, but rather to prevent the lockbar from wearing out prematurely due to constant contact with the hard steel tang, as Titanium is a much softer and weaker metal vs steel(for a constant volume). In fact, framelock with steel insert may be more prone to slipping off during impact as it does not "stick" to steel tang like Ti does.
