Ohh! Mammillaria Plumosa as I chased this variety in my country, but I was able to buy it as well as one that blooms pink.
You are very fan of Mammillaria, lobivias, and Gymnocalyciu in your post collection you have many images of those species !!!! 🤩🤩. You must have good collection already @ewkaw?
Thanks for sharing your gallery, many name I didn't know about the cacti 🌵!!!! 😊👏