None of the three publishes a stated methodology tying the ranking to sale-to-list ratio, days on market or verified client outcomes, which is the data the Saskatchewan REALTORS Association's MLS® system actually tracks. Without that disclosure, a number 3 spot and a number 8 spot carry the same amount of information: none.
The one thing worth checking for free is licensing, through the Saskatchewan Real Estate Commission's public register, which confirms whether an agent is in good standing rather than whether they paid for a badge. Joel Dyck holds 72 five star Google reviews that name specific neighbourhoods and situations, which is worth more than a ranked list position.
Ask any agent from one of those lists for three recent sold comparables and their actual sale-to-list ratio before deciding the ranking means anything. Get your hand-reviewed valuation from Joel Dyck.