In my experience, the pics show what a nice healthy plant is supposed to do, I'm not convinced strain variations will show up yet, if ever.
Given correct lighting, water and soil etc. almost all the strains will grow between 6-10 ft in one season (about 6-8 months growing). After their early growing, (sort of pushing and fighting each other for light, all differences seem to vanish.
I've always "felt" that H and W is the predominant strain grown in Mexico, and that the varieties sold were collected by different people, and given names to honor them, but aren't really new varities.
In my own patches, I have probably seen 50-60 different expressions or characteristics, ranging from unbeleivably robust and vigorous, running the gamut all the way down to spindly and feeble.

I don't have much control over how they respond

other than I try and keep them fertilized and watered, and in some sort of filtered light....but the expressions they put out, are pretty amazing.
All my plants, (excepting recent seed strains) came from Green Stranger, and were labeled H and W....just a couple of little sticks....
If they are pinched, all that energy will go into branching.
Its sort of a tradeoff, as tall, unpinched plants will not have as many individual leaves, but the ones they have, will be huge. Pinched plants are great for making cuttings, to get your total supply going, but it also slows down plants a week or two, or more (when they aren't strong) and if done too late the season, plants will not flower.
Letting plants lean over, (by staking or letting them lean) will also encourage laterals to form, without the trauma of pinching.
(don't mean to hijack grow thread.... please move thread and pic somewhere else if needed)
Heres an unpinched adult, notice the hefty laterals. They are about 1 ft. long. Unless these plants can lean on something, they invariably wil break, as laterals make plant to top-heavy.
these ideas, of course...IMHO
ps check out spider thread off top of flower!!! Hunting for my wasp pollinators.

