Have you considered Boston Terriers?
A) No c-section to procreate B) Same behaviors (need for affection, size, general behavior) C) Squishy jowly cuteness. Not quite as wide bodied. Many Bostons are built like grey hounds with a chihuahua size...
We bought a boston terrier from a breeder who gave us one she saw was docile and good for a family.
Honestly, that's what's missing from the adoption equation. Not physical characteristics (though I wanted a small dog that wouldn't trample and intimidate my 6 year old) but judgement from the breeder about whether the pet is suitable for your situation.