https://conventionalcommits.org/en/v1.0.0/

I <3 great (edit: improve clarity) commit comments, but I am leaning more heavily to good comments at the same level as the dev is reading - right there in the code - rather than telling them to look at git blame, find the appropriate commit message (keeping in mind that there might have been changes to the line(s) of code and commits might intertwine, thus making it a mission to find the commit holding the right message(s).

edit: I forgot to add - commit messages are great, assuming the people merging the PR into main aren't squashing the commits (a lot of people do this because of a lack of understanding of our friend rebase)