Xenoblade Chronicles 2 is defiantly a must own on the system (at least if you understand such games) but to me that game is number 1 on my top 10 greatest Nintendo Switch games, so far!
Spaltoon 2 Xenoblade Chronicles 2 that is a easy one! Bayonetta 1 and 2 there great Games Kirby no doubt also resident evil revelations 1 and 2 (just like Bayonetta there bundled) and last but not least my favorite is dragon ball xenoverse 2! Nothing like dragon ball on the road