https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:150828-2
Mammillaria craigii G.E.Linds.
First published in Cact. Succ. J. (Los Angeles) 14: 107 (1942)
This name is a synonym of Mammillaria sonorensis

https://www.inaturalist.org/flags/382225
Neither Lodé nor POWO recognize Mammillaria craigii. Both recognize M. sonorensis.