Oh dear, contradicting Copiapoa names is somewhat more dangerous than lion taming, but here goes ...
First two seem believable
C. coquimbana is an incredibly variable species, but one thing they all have in common is fairly stout spines. I think this is C. humilis. One sure way to separate them is that C. humilis will have big fleshy roots, all C. coquimbana have a fairly standard fibrous root system
Not much doubting the rest up to C. dealbata. I'll take two, btw
Actually, I have over a dozen C. dealbata but nothing like this!
C. tigrillensis is just a name applied to the collection numbers KK1385 and KK1386, nothing more and nothing less, collected near Tigrillo obviously. It is generally considered to be a form of C. longistaminea and to be frank your plant looks nothing like C. longistaminea.
C. marginata might be right, little ones can look like before the tubercles merge into ribs.
You're right about C. tenuissima, nothing like that, but it does seem to be some kind of C. humilis.