Don't know if it's been mentioned on here yet but 2k23 has given us the ability to create a coach. I stumbled upon it by accident. You have to go to the G-league teams in the roster editor menu and find a generic face coach. They are they ones that are white, bald with no eyebrows.
You go into their edit screen and select customizable
Then beneath that, you'll see a zero with the A or X button. Press it.
And you can now edit your coaches appearance. You can even change the gender to female.
Props to 2K for implementing this feature and not even promoting it. Sim heads have been asking for this feature for years. 2K continues to be the standard in sports video gaming.
Sorry if this has already been posted/discussed.