Grad School Interviews with Multiple Programs at same School
I doubt that you would have repeat interviews with the same person unless it is a group interview (group of professors). If they know of your interest in the various positions they will ask whatever questions need to be asked when they meet you.
List the professors you want to work with and ignore the overlap. Let them work out the details.
Of course, someone may want to sit in on more than one interview if the positions are different enough. But they are likely pretty busy. I they come back for more, I'd take it as a sign of high interest.