I have had zero experience with the hexagonal style controllers you link to but I did own a Linnstrument.
Alternative controllers is a growing market I’m really interested in - more so for the benefits of MPE midi (which Linnstrument supports). I’m a keyboardist at heart so am happy enough with basic piano playing (though my theory/knowledge is dreadful!) but I like to have an alternative.
At the moment that alternative is Push 2 which is fantastic for scales/chords and makes a lot of sense to me though you are, obviously, tethered to Ableton which unfortunately remains non MPE compliant without work arounds.
There is a smaller Linnstrument model available now that’s half the length of the original which might be an option. I found it very difficult to learn though I was pretty lazy with it so sold it on. You have to approach it as if it’s a stringed instrument - your “slides” will be horizontal rather than vertical (if that makes sense!).
I don’t think there is one alternative that ticks all the boxes right now though. It will be a bit of trial and error. The Roli Rise, for examples, is a fabulous piece of equipment that offers some wonderful possibilities but it’s in keyboard format and, for an Ableton user, is a pain in the arse!
The Launchpad pro can be used outside of Ableton though I think and will give you scales/chords into a number of midi capable bits of gear. It’s also the cheapest of the pieces you list by a long way!