Kinesis  Advantage  360   

PROS:  #zmk #quality #globalchannel #marketshare  #curved concave key well 
CONS: #bluetooth_issues _in2023  #weight   #price  #small_hands  #high_profile  #too_high  #no_innovation  #portable  #price 

Moergo  Glove80   
PROS:  #zmk  #low_profile  #80keys  #innovation  #passionate_team  #webconfig++  #weigth  #smaller_hands   "#portable"  #great_community  #curved concave key well
CONS:  #cheap_plastic_feel    #tenting    #weigth_can_cause_desk_sliding

An ergo a day keeps the doctor away!" - Stephen C

[design story] - [Daniel's links] - [Compared]  - [soldering your own switches] - [another design story]

ZSA Voyager     
PROS:  #looks   #portable  #low_profile  #marketing  #community    #ui_user_friendly(qmk)
CONS:  #qmk (no zmk)  #not_wireless    #limited_nr_keys    #cables    #learning_less_keys_requires_layers

ZSA Moonlander    
PROS:  #community    #proven    #marketshare
CONS:  #qmk   #portable   #high_profile     #allready_old_outdate  #not_wiresless 

Dygma Defy    
PROS:  #marketing  #hotswap 
CONS:  #bazecoreOS   #high_profile  #looks   #portable    #16thumb_buttons_location?   #non_standard_keycaps

Keyboardio  

The palm keys can be used to access a variety of functions, including: function mode, macro's or layer switch. Some reported "The palm button gave me pain in the base of my hand after a while"

PROS:  #looks #interesting_palm_button  #ergonomic
CONS:   #Kaleidoscope  #future_proof?   #size_community?  #flat  #not_low_profile   #no_standard_keycaps

Bastard

Found on Amazon and looks interesting.

Look more like shoes ;-)
link

gaming keyboard

charachorder  

Type faster than physically possible on any other keyboard

CharaChorder is the world's first keyboard replacement designed for both character entry and chorded text entry.

PROS:  #fast  #interesting
CONS:   #different #difficult

Five keys surround each finger.  The fingers move short distances (5mm or so) N/S/E/W to hit the side keys, which tip outwards, and the fingertips press down to hit the center keys.  website

Alternative for the Kinesis Freestyle. Cheaper at least and available on Amazon.
Interesting video from someone with left and right halves inverted

The Royal Kludge S70 beats most of the keyboards listed is all ergo reviews by a mile.. true split, tenting, programmable, tri-mode wired/RF wireless/Bluetooth (well needs a bridge cable between the halves, but wireless to the host), rgb, hot swap,  and it's sub $100. With this in mind, the only ones worth considering in the list are those with a thumb cluster or a keywell.

gaming keypad but very interesting
https://www.azeron.eu/

source

https://www.lynxware.org/