It would be great if near the checkbox “Avoid ambiguous characters” in the password generator there was a list of these characters (it isn’t convenient to find this information in the source code) so that it’s easier for a user to calculate password strength.
Not to take away from your Feature Request, but in case you (or someone else reading this) simply wants the answer, the ambiguous characters are:
Uppercase: I, and O
Lowercase: l
Numbers: 1 and 0