From this SoS page: https://www.sos.state.mn.us/election-administration-campaigns/become-a-candidate/candidate-filing-periods/
County Offices
Candidates for county offices such as County Commissioner and Soil and Water Supervisor may file from May 17, 2022 until May 31, 2022 at 5 pm.
From that it appears it is premature to find who has filed for that vacancy.
Unhelpful: https://www.anokacounty.us/3890/Candidates-Filed-for-Office---2022
No further web searching today, by Crabgrass. It looks to be, today, a clean slate for an open seat. Too early to pop any popcorn.