Another is Jerry's Nugget in North Las Vegas. Tuesdays are senior day - 5x points on slots/video poker, a $5 matchplay and some dining deal ($10 at café with "qualified pit play" whatever that may be).
Combine this with a $5 MP from the ACG and it's a pretty good deal for a quick stop.
Rampart out in Summerlin has Senior Tuesdays - slot tournament, $5 lunch buffet, earn 50 pts for a chance to win $1000 at the kiosk, bingo special, complimentary size upgrade at Starbucks, spa discount, pay with points dining discount, etc. I'll try to put a link here, but I think you'll have to search for the senior day amongst the other promotions to see the details.
https://theresortatsummerlin.com/promotions/The Wildfire casinos (part of Stations) have their My Generation on Mondays. 6x points, 20% off dining, half price bowling. Not great, but it's there.
I'm kind of surprised you didn't include your beloved Ross Dress for Less?
If I think of any others, I'll be back.
Cheers,
Deanna