From RCBS, for non-shouldered cartridges:
https://www.midwayusa.com/product/1011444424?pid=385463
https://www.midwayusa.com/product/1012058164?pid=453373
Hornady:
https://www.midwayusa.com/product/1011098266?pid=519048
Lee:
https://www.midwayusa.com/product/1011214925?pid=454495
I am sure there are others. But steel dies are still common. And, folks are selling them so that is another source for regular steel dies.
45_Colt