Around Mn, fatheads are typically a good choice mostly based on availability, but also on reliability. Best will change based on specific lake forage and conditions, time and location. I had one of my craziest walleye fishing experiences fishing with rosie fatheads. They loved them for a single trip. I've tried to replicate this experience a few times; it seems they often dislike rosies. The emerald shiner can also be the bait, or not. stupid fish...