These folks don't want to do training. Most folks say they're willing to do a lot of training then end up doing little. So when folks say they're only willing to do a little, I expect that they'll actually do almost none.
There's a reason why so many beagle are on Petfinder. They're adorable, and untrained, they dig (and therefore escape), bark,bay, and howl when they're lonely (more so than most breeds), go to heroic lengths to get into anything that might be even vaguely considered foodish. and often don't respond to more traditional training. So they're called stubborn and stupid (thanks, Stanley Coren), when in fact most beagles are bright and lively. But they have to have engaged owners willing to m anage them 24 hours a day until they (the beagles, not the owners) about 8years old.
So shelters and beagle rescues are bursting at the seams for a reason. Adorable and sweet isn't enough for the average lazy owner when the dog does not obey the simplest commands, is hard to housebreak and gets into the garbage regularly.
I cringed when Uno won Westminster. That yowling he did when he won was pretty intentional by his handler, though. I'm sure there were a lot of people thinking, "oh, I'd love a cute little dog like that," until they saw how a beagle can just howl, and howl, and howl.....
I think Leonbergers are a good suggestion. I've never met any but a nice very mellow ones. An older well-screened retriever could work, as could an adult (well screened) large dog like a Dane. The problem with Danes is that they're guard dogs and can become very guardy and territorial if owners don't manage that from puppyhood.
I would recommend they not bother looking for a breed but a "type" of dog and then work with their local humane society or shelter to find a dog that suits their needs. There ARE dogs that suit them. But if they have a certain breed or two in mind, they may skip a dog that really is perfect for them.
My newest dog is a mix of two breeds I'd never get, but she's a nice blend of smart, energetic and willing to please: just gentle enough to play easily with my small dog and just feisty enoough to push back when my GSD gets pushy. I didn't plan to get this blend (I wanted a beagle or beagle/mix). But I was
open to getting a dog that could blend into my family. So I ended up with a JRT/Cattle Dog (possibly Aussie) mix.
And she's a lovely addition to our family.
She is also a mix I would never recommend for a novice or lazy owner. It's best when we match individual dogs to their prospective families, instead of looking for a breed type and hoping that it will work.