Townsend is no where near the level of Vekic and Barty.
Currently the best juniors 1995 onwards (not potential wise, but current performance and strength) are in order:
Not based on results of course. But I am going to say that if Donna played Taylor, Taylor would win due to her lefty ability and her willingness to come forward. I don't think Ash would beat Donna... Which other 96 girls are there???