I can't find the article and it would be dated now but the Switch has had more games in its library than both the Xbox1 and PS4 did in any comparable year since its release thus far. Today, in its third year, it has around 2,354 games in its library. PS4 (turning 7) has 2,565 and XBox1 (turning 7) has 2,460. If we're talking about exclusives PS4 has around 229 exclusives while the XB1 has 122. The Switch currently has around 55 with another 5-10 or so in development/pending release so they're lagging a bit here and admitted they're trying to work on new titles and bring new IPs.
Out of the 10 best selling Nintendo Switch games, only three are not exclusive to the Switch (#1. Mario Kart Deluxe, #4 Breath of the Wild (originally developed for WiiU but simultaneously released for the Switch) and #10 New Super Mario Bro. U Deluxe). Out of the top 31, 7 are not exclusive, 8 if you count the complete overhaul/remake of Links Awakening. #2 Smash Bros. Ultimate is not a Wii U game/port.