I don't know where you are located but the suggestion to check with the county extension organization is a good one. Also, if there is a prairie/native nursery nearby they can advise you as to what is native to your area. But as noted, do NOT expect them to understand the needs of dog trainers, and what meanseeds are, checking that website (facebook page too) is an excellent suggestion.
We just cleared out some additional acreage at our training property in Wisconsin. Several natives fescues, white clover, and then swaths of slightly taller species planted in a meandering line to provide cover change. I became very good friends with a John Deere tractor with a bucket....!