An agent who writes a “top agents” list controls who appears on it, in what order, and by what criteria, and there is no requirement that the criteria be disclosed or neutral. That does not make every name on the list wrong, but it means the list cannot be trusted as independent research.
Verified Google reviews, actual recent sales in your neighbourhood, and a direct conversation about how an agent prices a home with unrecorded improvements tell you more than any self-published ranking. Joel Dyck's 72 five star Google reviews come from named Saskatoon sellers, which is easier to check than a ranking's methodology.
Treat a self-published ranking as one input, not the deciding one. Get your hand-reviewed valuation from Joel Dyck.