Ours usually looks similar. We normally tip our Luminae waiters direct vs giving it to the maitre'd. We did have one cruise where we were attended by several different waiters, as our primary waiter and assistant waiter both tested positive for COVID. In that instance we left an envelope for them with the Maitre'd and also left an envelope for the Maitre'd for the rest of the Luminae staff.
With respect to the Retreat Concierge, if we use the Concierge for anything then we will tip them at the end. There have been multiple cruises where our only interactions have been normal greetings and an escort off the ship.
We love the Retreat/Michael's Club on S-class and usually hang out there for at least an hour in the AM and PM. We typically tip the Retreat Bartender when we leave the Retreat for the evening. Sometimes if he/she does something above and beyond, such as running down a bottle of my favorite rum, I may slip him/her a little something extra then and there.