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That large one I circled, almost reminds of a phenomenon called the island effect. You see it it sometimes from satellite imagery taken over the ocean. On the lee side of islands you sometimes get this streaming or turbulent motion of the clouds caused by the prevailing winds moving around the elevated parts in the interior of the islands. It can be quite spectacular, with arrow shaped, herringbone shaped and en echelon clouds building up behind the island. You can also get a random turbulent motion as well, depending on how the wind blows across the island and the topography.
In this instance, it's almost as if this particular cloud is acting like a solid surface with some elevation, causing the prevailing winds in that particular belt to form eddy currents on the trailing end of the cloud. Those eddies are then acting as a site for cloud formation, probably by supercooling the flow of gas within each eddy (convective flow (uplift), releasing heat and cooling the gas).
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