Fetch List - 1st Quarter.xlsx

Hi folks, new user here

I'm hoping for some quick help. I've a list of people in Sheet 1 and I'm trying to see if any of the names in sheet 1 also appear in sheet 2 and/or 3? If they do appear then I'd like them to be highlighted in sheet 2 and 3. Can this be done in excel and if so, could anyone help with a formula? I've attached the file (if it's helpful).

Thanks in advance