First one is a little light that illuminates the gear shifter with a gentle glow at night. A lot of cars have one. My favourite was in my Passat R-Line that had a sexy red one. The second picture is the switch for the internal lights so they come on when the door is open. The final one is the voice interface, the theory is that if you press it you can ask the car to make phone calls if your phone is connected via bluetooth. I have not used it to see if it works as I used Android Auto. Remember that your steering wheel is straight of a VW Golf, on the VW the button is present but is an optional extra to have it activated.
Okay, so the top photo of the little small white light next to the symbol of the car door open.
Well, my car was like this when I had taken delivery, I first I though it was a pretty hopeless interior light !.
Turns out, that the switch depicting the car with the door ajar, had NOT been pushed !.
When you push this button, it will allow the main front interior lights to come on, when the front doors are opened !.