With respect to the unknowns, I would guess austera (BRK unknown #1), granulosa (BRK #2), and tenius (Dr. Mac unknown). I have one just like the Dr. Mac unknown and it had the darker brown polyps until I put it in a high flow area and then all the polyps turned translucent like yours in the foreground. Funny thing is that when I was not treating it right, its body color was just a pretty deep dark blue without contrast.