This is a tough one.  Switch Lite came out in 2019 and Switch OLED came out in 2021.  While it is reasonable to think Switch 2 will follow a similar schedule, there are hurdles in place making both a Lite and OLED model difficult to produce.  A Switch 2 Lite model will require the SOC to be shrunk down to a smaller node for improved power efficiency.  Moving T239 from Samsung 8nm to Samsun 4nm would do the trick, but for cost reasons, I do not see that being viable until 2028 at the earliest.  As for a Switch 2 OLED, my understanding is there are no manufactures producing 8″ 1080P OLED displays at 120hz with VRR.  I do believe both models are in the plans, but I do believe we will be waiting a bit longer this time.  I suspect we will see the Switch 2 Lite in late 2028 and the Switch 2 OLED in 2030 and Switch 3 will release in 2033.