I definitely don't like the idea of dubbing people "the new" or "____ equivalent of" but I can't deny that my first and only thought was Sutton as well.
They/them.
"Get up the nerve to be all you deserve to be."
When I think Gwen I also think of Chita. Neither can be duplicated or replaced. If I had to pick anyone who comes close to them at this point in time, for me, 3 names come to mind. Sutton Foster, Charlotte d'Amboise and Karen Olivo. JMO