I think the above post covered what I would have said about Australian Shepherds.

Mine have a huge yard to run in and each other to play with. My pure bred has the nice double coat that is normal with Aussies and she does need to be brushed a lot (more than I actually do ). And I get her groomed (trimmed) probably every 4 months or so. I invested in clippers myself so I can do any trimming needed on her rear. Some have nice flowy fur on their bottom, but Zoee has the coarse kinky stuff that is a pain for both of us.

Zoee loves to swim, while Taggart is not crazy about it. But he loves to play in the sprinklers.

They are very smart. They will do tricks/commands for you before you even ask. Of course seeing the treat or carrot helps.

I also know some about German Shepherds. These dogs are prone to hip dysplasia. My sister had four and two of them had this problem. One was a retired police dog because of the HD. The other had to be carried around in a sling because her back legs would give out on her. There was a supplement my sister gave her to help. I can't remember what its called, but can find out if necessary (or maybe someone else knows).

Corgis are almost like an Aussie with shorter legs. Very smart dogs, double coats and herders.

I'd love to have most of the dogs you have listed as well. Good luck to you on that endeavor!