Hi Nelda. For background on the WeRelate project and database WikiTree uses for variant surnames, see here and here. However, at some point this may change: see this link.
PS Welcome to G2G! In case you're reading by email, here are those links in full:
https://www.wikitree.com/wiki/Help:Variant_Names_Project
https://www.werelate.org/wiki/WeRelate:Variant_names_project
https://www.wikitree.com/g2g/1562250/what-improvements-would-you-make-to-search-matching?show=1562287#c1562287