The NPD Group recently revealed that Nintendo Switch managed to outsell Xbox One and PlayStation 4 in November 2019. However, there seems to be a shortage on standard Switch consoles in December:
“Main thing that will decide US December Switch sales at this point is simply inventory. Shortages on standard Switch consoles is becoming increasingly wide spread. The Lite model is still in strong stock in all colors, but base Switch is becoming supply constrained.”
Source: Benji-Sales @BenjiSales