Wellcome rhymes with:
branscome, income, outcome, overcome, branscome, goodrum, humdrum, income, mishawum, norodom, outcome, overcome
Wellcome sounds like:
waleson, walk-on, walken, walkin', walkman, wallison, welcome, wholesome, wilcoxen, wilcoxon, wilcoxson, wilken, wilkin, wilkison, willison, willson, wilshusen, wilson, wolken, woloszyn, woolson