Every "split" mechanical keyboard currently being sold that I know of

split_keyboards.md

• Kinesis Freestyle (Terrible key switches. Mushy and un-lovable)

• Kinesis Freestyle Edge (Traditional layout with too many keys, mech switches, proably too big to be tented easily/properly)

• Matias Ergo Pro (Looks pretty great. Have not tried.)

• ErgoDox Kit (Currently, my everyday keyboard. Can buy pre-assembled on eBay.)

• ErgoDox EZ (Prolly the best option for most people.)

• Diverge 3 (Looks great. Might buy one. Ergo-dox really has too many thumb keys anyway. This might be a better design.)

• Diverge TM 2 (Cool idea. Magnets! Too few keys for me.)

• Keyboardio (Halves can optionally be separated. Looks promising, but too few keys)

• Dygma Raise (Nice thumb keys layout, but no arrow keys and probably too big/unweildy for effective tenting)

• UltraErgo (Does not appear to be mechanical)

• Ultimate Hacking Keyboard (Small layout, mech switches, intersting-looking thumb attachments but missing arrow keys! And Kinda ungly)

• Lets Split (Dunno what this is yet)

• Mistel Barocco (no arrow keys, but looks good if you like 60% keyboards)

• Goldtouch (Technically one-piece, but close enough. I've used these. They're crap.)

• Goldtouch Go (Technically one-piece, but close enough. These are also crap.)

• Comfort Keyboard Split Magic Keyboard (This looks terrible)

• SafeType Keyboard (Also looks terrible)

• Axios (Something gloriously weird that is under development. Maybe.)

• Cheap Split PCB Boards for sale (Totally DIY. Soldering required!)

In their defense, the Dygma Defy is capable of some extreme tenting, doing that without a wrist rest wouldn't be very ergonomic, I think. Either way, making a detacheable wrist rest with tenting would be very hard to accomplish.

Glove80 does have both tenting and removable wrist rest. Both the main keyboard and the wrist rest have feet with threaded rods you can unscrew to tent (and optional longer rods for higher tenting). That method also lets them do mounting for their camera/quick release plates since the threaded rods go through holes in the plate and then the feet go on under to secure it (and let it be flat on a table for the quick release version).

As an aside, it is worth looking into mounting options in general. If you’re willing to spend a bit, can get some really high quality clamps and then arms which you can fully adjust and lock down with a single mechanism. You can then clamp to a chair for a “captain’s chair” setup or clamp to the edge of a table and have the halves be down below, do any tilt you want, etc.

I got the wider plate on the right side with my Glove80, but that does limit the tilt of the plate itself if you’re using a mouse. I may end up getting a Magic Trackpad and Velcro it to the plate for a more flexible solution.

@itod
Your list includes the Kinesis Freestyle, even though it's not mechanical. However, you omitted the Freestyle Pro, which is mechanical. https://kinesis-ergo.com/keyboards/freestyle-pro-keyboard/

What gives?

Nor are the two Goldtouch boards...

Since I last commented on this I've now switched to a svalboard lightly.

It looks weird but both was pretty easy to switch to, and has these amazing magnetic separation keys that are unlike anything else I've ever tried.

So nice for my finger pain!

https://svalboard.com/

UHK now comes with a 75% layout, including arrow keys and more thumb buttons and a row of F keys with wireless option.

Keychron Q11 split is another option.

Naya Create is another interesting option.

A few links stopped working.

Diverge 3 is 404