Mammillaria and Pilosocereus needs ID

[xarbak]

Hi everyone,
I have recently decided I enjoy caring and acquiring such plants. I have 2 mammillarias without name, as well as a pilosocereus I believe?
The Pilosocereus gives off a lovely blue colour when in the sun, I may add.

Thank you all

#1 - Mammillaria ?

thumb_IMG_7804_1024.jpg (43.51 KiB) Viewed 768 times

#2 - Mammillaria crinita??

thumb_IMG_7571_1024.jpg (42.1 KiB) Viewed 768 times

thumb_IMG_7573_1024.jpg (39.4 KiB) Viewed 768 times

#3 - Pilosocereus pachycladus or azureus?

thumb_IMG_7557_1024.jpg (34.08 KiB) Viewed 768 times

[Kamos]

#1 looks like possibly Mammillaria mystax?
#3 you're probably right about P. pachycladus.

[cactushobbyman]

The hooked spines on #2 maybe mammillaria bombycina, M. senilis. ??

[xarbak]

Thank you guys! It is a really difficult one. They do look rather similar, but I don't think they are quite the same.
I won't give up!! lol.

[george76904]

I would actually say mammillaria zeilmannia.