No lists!
Yeah, they're pretty easy in the sense that they don't maintain a "list" per se and you don't have to dress up. But as you can imagine, the flights are usually pretty full during the summer and if you're trying to jumpseat on a twin-otter or metroliner (without an actual jumpseat installed in the cockpit) you might have a little difficulty.
Of course the Dash 8 and Saab 340 have proper jumpseats and would be easier to hop onto.
Depending on where you're planning your fishing trip, B767300ER, you might want to consider Hageland Aviation as well. They fly B1900s out of ANC and FAI.
And there are still the cargo carriers NAC, Everts and Lynden but jumpseating on them just isn't as easy as it used to be--not impossible--just not as convenient.
Good luck and feel free to follow up or PM me if you have any more questions.