Allsop rhymes with:
allsopp, allsopp, aesop, allsopp, paysop, aesop, allsopp, alltop, backdrop, backstop, barbershop, bebop, bellhop, blacktop, bookshop, bookstop, co-op, countertop, daytop, desktop, dunlop, eavesdrop, eyedrop, gigaflop, hilltop, laptop, lollipop, malaprop, mountaintop, non-stop, pawnshop, paysop, picop, raindrop, rasterop, robocop, rolltop, rooftop, sharecrop, shortstop, sweatshop, tabletop, turboprop, wardrop, workshop
Allsop sounds like:
alcove, aliquippa, allsopp, allsup, allusive, alsip, alsop, alsup, alysheba