I just installed two Lutron Caseta switches in a 2-gang switch box. When I opened the box, I was expecting to find a separate ground wire to each switch. However, what I found was a single ground wire that was looped over the green screw on switch #1 and then connected to the green screw on switch #2. This wire was tied into a bundle of ground wires from the loads and from the source that was tied together with a wire nut.
When I installed the new switches, I tied the green wire from new switch #2 to the end of the ground wire (with a wire nut), and I tied the green wire from new switch #1 into the bundle of ground wires that was pigtailed together.
Was this OK?
UPDATE: The ground wire bundle was actually connected with a butt splice wire nut, and the single wire coming out of the end was the long wire that went to the two switches. After I installed the new switches, I just tied the long wire and the two greens from the switches with a wire nut.
Based on @KH's comment I also realized the wire nut holding all the neutrals was too small, so I added a pigtail using the short yellow 14 AWG wire that came with the Lutron starter kit, moved one of the original neutrals into it, and added the two whites from the switches.
I'm pretty confident all of this was OK but feel free to comment. Here's a photo of the new setup: