Clarkson's farm has a number of issues, but it does give a fairly broad base about modern farming in the UK

especially as all that work in the first year meant he made something like £900

Mike Mitchell is great. He's very Canadian but pleasant. And they have an operation on a massive scale (family business).

Barn Talk is... something. IF you're liberal it might offend you at some points, but there is a ton of gold in there. They also have a channel about their day to day farming.

Welker Farms, Millennial Farmer, Cole the Corn Star and Larson farms are all "interesting"... They are all very different.