mammillaria?

hello to everybody..
what's the mammillaria?

At a guess, with the golden spines and wool, I would say it is M.columbiana ssp columbiana.

thank you tam...

and this mammi??

loks a bit like a microhelia, though it should have 3 upper darker spines.

mammillaria matudae???

It is possible, as matudae has just the one central that points upwards. But usually matudae has much smaller tubercles that your plant, quite closely packed together. The central spine on matudae also usually becomes grey after a while, on your plant the older centrals look darker.
I suspect your plant has been grown in too little light, so it's appearance my not be typical. Has it flowered for you? If so can you tell about the flowers,colour and shape.

mammillaria haegeana???

I don't think so, areoles are too oval.