Antenna Ray - Gets much too large.. hasn't been bred in captivity, finicky eaters.
False Scobina - Likely a Peruvian Motoro variant, similiar to 'common', 'laticeps', 'histrix', 'yepezi', and 'nazca'.. Many of these rays are similiar in pattern and characteristics, however there is no absolute scientific information separating the jumbled common names. Max Size is a mystery?
Ceja, Eyebrow, or Apple Ray - Gets too big, finicky eater.. Small-eyed Ray like Antennas, haven't been bred in captivity.
China Ray - Gets WAY too big.. same deal, small-eyed ray.
I have no idea on this one.. Never heard of 'Coly'.. However, there is a number of Peruvian rays that I imported or saw on the list, that you aren't showing here.
False Histrix - Not the true, smaller, Hystrix out of Brazil.. this false histrix is a common peruvian motoro variant.. Many mysteries about this group of brown rays, as no one seems to grow them to max size nor breed them. I have been very interested in breeding and crossing them with Motoro variants.
False Flower, Peruvian Flower - P44 Dumerelli.. Another Motoro variants, nicely patterns with flowered spots.. Very hardy from what I've seen, would be easy to breed.. However, not much demand.
Castexi variant - Very nice 'tropical' type pattern.. grows fairly large, and would likely cross with any other castexi.. These are gorgeous rays IMO, and very under-rated.. I have a feeling they will become increasingly popular with the inflation in prices of the more spectacularly patterned rays (black, tigers)
Motoro - Probably has a nicer pattern.. Not a true marbled from Columbia, but what we would call a AAA+, which means many more spots than a regular Motoro..
Castexi variant - These also have a very nice pattern and are very under-rated..
Duh - Very prolific rays.. Would be best for efficient breeding stock.. A big female motoro can push out 6-12 pups per litter.. Perhaps cross a fatty female motoro with some other interesting variants like the false Histrix, Nazca, or false Scobina..
Motoro variant - Very similiar to the 'yepezi', if not the same ray.. No one knows for sure, and everyone has their opinion. Either way, it's a brown ray with black wavey lines.
Jaguar Castexi - I always thought these guys got big, like 3 feet.. but apparantly they don't.. Either way, Castexi's are a larger ray, can be aggressive especially at feeding time.. Beautiful pattern, but probably won't be a huge demand for captive bred specimens as they are so easily available for importation..
Castexi variant? Never heard of the pineapple, but I can almost guarantee it is very similiar to Hawianna and Motello.. Probably has a pattern that distinguishes itself from the other 2 castexis..
Tiger Rays.. big, expensive to feed, huge max size.. although beautiful, not practical.. Only a few accounts of breeding in captivity, and that took years to accomplish in public aquaria.
Gotta love Castexi's..

So many different beautiful patterns, if only they stayed smaller.
I hope that helps.. I have imported alot of Rays from Peru and know the in's and out's.. I am still in contact with my exporter, who speaks both languages quite well and dosn't operate business like some of the shifty Peruvian exporters.. If you need someone reliable, contact Miguel at AquariumPAEX..
If you need any other help or advice just shout!