I finally got around to updating/finishing the Nextion template for my F1 wheel, so wanted to share here.
It contains multiple pages with different pages for different cars:
Session Start screen
Race Sim Studio Formula Hybrid 2017
Kunos Ferrari SF70-H
Race Sim Studio Formula RSS 2
Race Sim Studio Formula RSS 4
Kunos Ferrari F2004
Kunos Porsche 919 Hybrid 2016
Obviously the 919 Hybrid is not a formula car, but I do use my Formula wheel rim with it so that's why it's included
I have replicated the screens from the in-game wheels of each car, mostly using a screenshot as a reference in Photoshop CC. However, both water and oil temp aren't available to Simhub to get the data so these show as 0 on all the pages. Everything else does work though including the ERS (where appropriate) state of charge and amount remaining for the lap.
Finally here's a video of it in action (from my YouTube channel):