The initial log-in screen shows at least one user which can be logged into the system, with a blank photo. How can we add or change this user-image? The manual shows nothing relevant when searched for 'image', 'photo', etc.
Possibly related: [Ubuntu 20.04] Change your login screen photo and Where is 'Users and User groups' in Lubuntu 20.04? and How do I change login screen theme or background in Ubuntu 20.04?