Topanga rhymes with:
manga, alvarenga, andringa, bencivenga, berlanga, binga, bubinga, colunga, conga, elzinga, falanga, hayenga, huizenga, huizinga, inga, kasinga, kowabunga, malanga, manga, matranga, mennenga, nanninga, salonga, stanga, stegenga, tamminga, uranga, wierenga, zamboanga
Topanga sounds like:
tabbing, taping, tapings, tapping, thieving, tiffany's, tippens, tipping, tippins, toobin's, topping, toppings, toppins, tubing, typhoons, typing, typings