The Switch Lite does not come with detachable Joy-Cons, as they’re built into the handheld console instead. This means you’ll be able to use the Switch OLED for games that are best played with motion controls. The Switch OLED comes with two Joy-Cons, which are the same (besides the white paint job) as the ones found with the standard Switch. But if playing in TV mode is a priority, then you should stay clear of the Switch Lite. The Switch OLED supports TV mode via the bundled dock, but it hasn’t got any upgrades for such use (aside from expanded storage and a LAN port) when compared to the vanilla Switch.
While that’s not an issue for those who always use it as a portable, it does make it difficult for multiplayer sessions. The Nintendo Switch Lite is a great little device, but its biggest shortcoming is undoubtedly the lack of support for TV Mode, as it can’t be connected to a dock.