• case insensitive
• rrecursive
• only show filenames

I also like to use:

• I (capital i) to skip binary files, if I’m in a folder with heavy images/videos/etc
• c 3 to show 3 lines around the matched text

Fun fact: I use “git bash shell” over windows’ cmd just because of grep

grep -irl "some text that the file would have"

(Obiously only work for text files, but that’s enough to cover 90% of cases for me)