Yes indeed. I use my family and friends. Even some of the fellas here at the forum. My grandsons. Favorite bible scripture.
Names of loved ones who have passed on. Etc etc.

They show up for example in the pbp that says something like this at the end:

Jacob Connor My dear grandsons wouldn't mind if...(I can't recall the exact pbp call but 'wouldn't mind' is
in it I'm pretty sure.

Manager names for me add a real personal touch to the game. More than just a baseball game.

TODAY IS THE FIRST DAY OF THE REST OF YOUR LIFE. ADJUST ACCORDINGLY.