Configuration for Google Nest 2020 when replacing a Trane thermostat

[Kaydubya]

What will the wiring configuration when replacing this Trane setup with a Nest 2020 thermostat. I know the 'B' wire is the control for Trane and the 'X2' wire is for emergency heat which I can just tape off if I don't need (which I do not need emergency heat). Thanks!

[Kaydubya]

https://www.googlenestcommunity.com/t5/Nest-Thermostats/Can-I-replace-my-Trane-thermostat-with-Nest/... 

The trane configuration in this thread looks like mine.