When you tap in a field labelled "latin" and "verbatim" you should see a keyboard in lowercase mode. When you tap in one labelled "none", "latin-prose", or "latin-name" you should see a keyboard in uppercase mode. Eventually there will be other differences as well (in word suggestions, for example) but for now, inputmode is just controlling auto capitalization
The special inputmode "digit" for the input field will allow the keyboard to enter digits(0-9) only.
Besides, the special inputmode "numeric" for the input field will allow the keyboard to enter 0-9, +, -, comma, dot.
none: