The ones that should be given priority would be japanese companies, as they are the ones in best terms with Nintendo, and the ones that gave support(even if a little) to Nintendo all those years.Not saying that the others should be ignored, that would be stupid, but those should get the preference
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1