I posted feedback on the Apple store site. Then I downloaded and tried a number of keyboards.
The best I could find was Google's. For me I needed large keys to see, others were just too busy, too dark or the keys were too small for my vision. It has a glide option that works well if you don't hold a bigger iPad with 2 hands. You have to rest it and use one hand to glide with one finger across the keys, then stop on the letter that spells the word. It's pretty cool because it inserts apostrophes and space between words and double consonants even with a single finger stop. It also autocorrects.
The spell corrector is top notch for 2 thumb typing and so far has done well at anticipating the correct words in addition to correcting spelling in my intended words. I had turned off Apple's auto correct spelling but this one seems to be better at it. For some reason, with two thumb typing I used to hit the M key often instead of the space bar. The Google keyboard auto removed the M and recognized that a space was needed instead. It also auto capitalizes the letter I when typing first person.
It has the UNDO/REDO icons in the left upper corner along with a clipboard and bold, italics, and underline options in the right upper corner. It can be used without granting full access unless you want to search the internet using the Google icon on the keyboard.
The only thing I found lacking is the dictation microphone icon. In the settings, keyboard menu, I dragged the Google glide keyboard to the top as my first choice and put the default apple one at the bottom under the emoji keyboard. Now I can switch between them if I want to dictate.