[phaedryx]

I like 0 vs O better, but 1 vs l worse: https://imgur.com/a/1tXx8aH

[thundernixon]

There is a stylistic set which allows you to get an unambiguous 1 vs l (ss05). See:

https://github.com/arrowtype/recursive#opentype-features

Also, there are fonts made specifically for code which have code ligatures & the simple l, f, 6, & 9 frozen in, if you like these features but don’t want to mess with OpenType features (or if your code editor doesn’t support that).

https://github.com/arrowtype/recursive/tree/main/fonts/rec_m...