While the games they've ported have been old, Iron Galaxy have at least demonstrated a decent level of polish with their Switch ports so far.
IG, Virtuos (Starlink, LA Noire, Dark Souls Resmastered) and Panic Button (Doom, Wolfenstein II, Rocket League) have kind of become the "big 3" so far when it comes to studios who port to Switch. Personally I prefer PB the best as their games are generally newer.