We're thinking of offering the Nordic nRF9151-DK up for review.
It's a pre-certified development kit with an on-board LTE-M, NB-IoT and DECT NR+ antenna based around the nRF9191 System-in-Package.

It supports an array of LTE Bands, and also includes user programmable LEDs, push buttons and is Arduino Uno Shield Compatible.
There's on-board sim slots for nano/4FF SIM cards, MFF2 SIM footprint to support plug-in and soldered (e)SIMs and the kit includes a SIM card that is pre-loaded free data.
I've dropped the product brief in below:
The DECT NR+ cell-less 5G is interesting to me, but it looks like more than one of these kits might be required to review that capability, or the testing hardware may be quite specialised and isn't something a lot of members have access to.