That's a really interesting unit. I assume the griddle on side is electric? What's the brand and model? Can't quite read that label.
it's a camp chef, this one specifically:
https://www.basspro.com/shop/en/camp-chef-smokepro-sg-wi-fi-pellet-grill
camp chef has a "sidekick" attachment - it bolts on the side, basically just a single propane burner that cranks out ~30,000 BTU - you can't see it in this pic, but there is a tank hanging off the back. the sidekick takes a variety of its own attachments - i have the griddle as you see, the BBQ box (basically makes it a regular propane grill, i got it primarily for reverse-searing), and the pizza oven.