On your profile and the profiles of close relatives, you may see a list of other WikiTreers on the right side who have also taken a dna test and are possible matches. Hopefully, they have included their GedMatch ID, another website where people can share their results with each other. There may even be a link to click to take you directly there -- otherwise, make a note of their ID, and go to the GedMatch site and enter their ID to compare their results with yours (assuming you have also posted your results there too)