Where possible, I've stopped picking fonts that don't distinguish lowercase l and uppercase I. Words virtually always have redundancy (or context in the sentence) and it's fine in 98% of cases, but too often someone sends a token, password, name, or other string where you need to copy it out to another application to see it and just... why? Why bother?
I/O test for Sans Flex: https://snipboard.io/wXCQq5.jpg
It passes the O0 distinction but not the Il one
Example of a font that passes, Ubuntu: https://fonts.google.com/specimen/Ubuntu?preview.text=10%20I... (custom license but looks similar to GPL in that you can do what you want besides relicensing it as proprietary or removing credits)
Another one, Nunito Sans, using the Open Font License: https://fonts.google.com/specimen/Nunito+Sans?preview.text=1...
IBM Plex Sans is another Open Font License option: https://fonts.google.com/specimen/IBM+Plex+Sans?preview.text... (it has an unusual capital Q style though)