Wolfgang Wozniak is an indie game dev most well known for his work on VA-11 HALL-A. Wozniak has been trying to bring some titles to Switch, but it appears he's hit a wall. Nintendo has turned him down 5 times. He shared the details of his stumbles with Dotesports.
"Nintendo of America specifically, has been uncharacteristically ambiguous surrounding what they are looking for in a game. We've been turned down by Nintendo of America five times. You will likely notice that most of the indie games on Switch are from one of those regions, have a big publisher behind them, or have experienced great success previously on Steam. If your work does not fall into one of those three categories, then it seems like Nintendo of America is not interested. I'm certain that we'll be able to bring Switch owners something special in the future, but I am uncertain as to when that future will be."
In particular, one game was turned down for being too mature.
"It's a short and sweet game where two people have a conversation. It's an adult situation, but there is no what you would call 'adult content' in it. Specifically, this was mentioned as being exactly what they were looking for, but too mature."