Welp rhymes with:
delp, help, kelp, self-help, shelp, yelp, abplanalp, culp, dalpe, delp, eralp, fulp, gulp, help, kalp, kelp, kolp, kulp, philp, pulp, scalp, self-help, shelp, stolp, stolpe, volpe, walp, yelp, zolp
Welp sounds like:
walby, wallaby, wallop, walp, welby, willapa, wolf, wolfe, wolff, wolpe, woolf, woulfe, wulf, wulff