I have a gorgeous on the smaller side (62lbs) male Sheprador (a Lab/Shep mix) so am partial to any of the cute and friendly medium breeds. Labs, shepherds, malinois, nice terriers, basenjis, and who doesn't love a cute collie or dalmation? I do have a GF with a dalmation but female and she's a real weird dog behaviour wise, not friendly at all. I do like the look of Danes but scary to me (but they are super lazy and chill), and OMG if you could just make Italian Greyhounds a bit bulkier OMG they are so cute!
This one isn't mine but that's his colouring and look