In my estimation, we are not looking at the difference between the way buds grow; we are looking at the difference between hand-trimmed and machine trimmed bud.
I live in one of the legal states, and recently we are seeing a whole lot more machine trimmed bud. The machines are expensive to own or rent and are usually just used by the larger growers. The process seems to knock off all the sugar leaves, trichomes and hairs that generally makes up the outside surface of the bud.
I just bought some weed locally that looks just like the last two pics. The growers are not just selling bud; they are machine trimming buds and selling pounds of keif and sugar trim to the outfits that are producing commercial oil or edibles for sale. Check it out:
http://portland.craigslist.org/mlt/grd/5622029812.html