I tried this variant of JetBrains Mono and it had the perfect glyph width (reportedly -6%) for my screen and window sizes: NRK Mono Condensed from https://github.com/N-R-K/NRK-Mono. I also agree with almost all of the other modifications mentioned in the github page under “Some notable changes are:”

Now I can have side-by-side two editors plus a Structure or Project pane at the left in PyCharm while having 120 chars visible in both editors.

Neat! I'll check it out.

Ended up with jetbrains mono too, which is what i use anyway. Funny how you just end up defending whatever you're already used to