The SRN2512-R47M https://www.digikey.com/short/z27df8 would be Digi-Key’s closest alternate part to stay with a ferrite core in regards to the WPN252012ER47MT inductor from Sunlord.
If you are in a pinch or have more flexibilty here are some more options that may work
https://www.digikey.com/short/z270vt. You would need to sacrifice slight changes in current ratings, dimensions, and/or core material.