For those commenting on the importance of character ambiguity, I completely agree, and offer "DP Sans Mono", a font specifically designed for unambiguous proofreading.
This is magnified 2x (to show the similarity). Both the sample alphabet and the "character differences" shows uppercase-eye and lowercase-ell as the identical glyph, for DPSansMono.
https://www.pgdp.net/wiki/DP_Sans_Mono
https://www.pgdp.net/c/faq/font_sample.php
font download link at https://www.pgdp.net/phpBB3/viewtopic.php?t=70714