Looking for some good Great Lakes tug companies

Hey Everybody!

I would like the names of as many Great Lakes tug companies as i can get. As well as pros/cons. I hold a C/E limited, upon Oceans, inland and Great Lakes. Im 41 years old with going on 22 years experience but only on ship docking tugs and OSV’s. I googled a few companies and threw in some applications but i figured there is many more companies that i can check out. Also not limited to Great Lakes as im also interested in east and west coast companies. Thank you to anyone who helps.