Howard Kelly said:Suggest you check out Best Friends Animal Shelter, they have lots of dogs all shapes and sizes.
There main shelter is in Kanab Utah https://bestfriends.org/
Good luck
Beat me to it, I was just going to suggest that as a friend visited there the other day and said it is wonderful. We are in Kanab but haven't been.
Our friends had a King Charles and he was a nice mild mannered dog, he was terrified of our Jack Russell as he hadn't seen any other dogs I think but they became friends and then chased each other all over the house. Spaniels are nice dogs, my brother in law has a working cocker, needs a lot of walking though.
Chihuahuas are nice but some do shed a lot which is a nuisance. Rene might pop in and tell you how Buddy is working out.
I think a mutt might be a good choice though. Go to a shelter and see which dog picks you!
Good luck. Let us know what you get!