The Switch. My favorite Zelda, Dragon Quest, Fire Emblem, Witcher 3, lots of RPGs, and a lot of retro games. I have never bought as many games for a single console from any manufacturer as I have the Switch.
Runners-up would be SNES and Gamecube.
Top 5 (exclusives only):
1. The Legend of Zelda: Breath of the Wild
2. Dragon Quest XI S
3. Fire Emblem: Three Houses
4. Xenoblade Chronicles 2
5. Shin Megami Tensei V (exclusive)
5. Valkyria Chronicles 4 (if multiplats are included)