if you want the keyboard in the 'wrong' direction (BB-style) with few and small keys, the least huge is the UniHertz Pocket Titan.
My personal favorite is the Pro1, that is about to be replaced by the Pro1X any day (after covid and other delays - the original Pro1 is unavailable except used from e.g. ebay)
There is also the Cosmo Astro Slide, with larger but fewer keys, that is also close to shipping, if they have not already begun.
There are a few more options with a huge Titan and and odly folding older Cosmo, but the three above would be my suggestion to have a look at, depen