I just got the new S20 ultra and imported settings and apps from my s8.
1. I just noticed that i have 2 samsung keyboards in my languages and input section. See attached
2.Also on my S8, when typing, I was able to click on a mispelled word (not at the end of it) and see correct typing/other suggestions. I started using the option for auto spell check and it works, but not on all apps. See attached for how it should appear and how it appears on yahoo mail for example.