I would say, just about any variety that grows fine in the Mid-West. I would think that you have warm/hot summers but your season is short. Because of that I would plant only EARLY and MID season varieties with DTM less than 80.

Hang on for more suggestions.

Seysonn

Agree that assuming normal weather patterns you can grow most any variety you wish. Very few tomato varieties have any sort of local or regional limitation. It is the growing conditions and care you provide that make the difference between what variety does okay and what does "best". So grow whichever varieties you like to eat best.

Check the Ohio State Extension website to see if they recommend any particular varieties.

OSU Extension

Dave

In Southwest Ohio near the southern edge of zone 5, I have had the best luck with tomatoes that have a day's to maturity of less than 85 days. I have about four months of reliably suitable tomato growing weather, and I would guess you probably have two or three weeks less. I can grow Brandywines that have their first tomatoes at the end of July, and with luck they will continue producing until late September. Here is an OSU Extension publication that lists suitable varieties and growing tips, but like most of the advice you get from extension agencies, they favor hybrids. But they do list heirlooms I've had good luck with, like Brandywine, Mortgage Lifter and Cherokee Purple.

http://ohioline.osu.edu/hyg-fact/1000/pdf/1624.pdf

Thanks for all your help.