Grabbing from the list in the 7.5e rules the following is the list of "Common" Kindreds:
Human - easy enough to identify with, it could still use a grounding in the fictional setting it will be used in. Aren't even listed in the chart
Dwarf - again, easy enough to get a handle of, but could use tweaks beyond just attribute adjustments. We do know he stands about 4' tall
Elf - there are many kinds of elves. we could assume a "standard" High Elf from D&D type
Fairy - about 7" tall and can fly... or so the drawing shows
Hobb - think Hobbit or Halfling. 3' tall
Leprechauns - uhm, I think we would have to pass on the classic green outfit and hat. They do get access to a Wink-Wing spell that they can do w/o magical training, but it also says they are all Wizards. Go figure.
So, of the above, the Leprechauns have 2 sentences devoted to them. The rest? Nada. And those are just the common kindred.
I need to define the kindreds before I can even think of designing any part the world. I think I just stepped into a project...