Can I create both KDP and IngramSpark covers?

Yes, and it's a common setup (Amazon for reach, IngramSpark for bookstore and library distribution). Switch the printer in the Cover Maker and export again — you'll get a wrap built to that printer's exact spec.

Because a single cover license covers all variants of a book, generating both a KDP wrap and an IngramSpark wrap — in any binding — costs nothing extra. Just remember each printer wants the file that matches its spec, so upload the KDP export to KDP and the IngramSpark export to IngramSpark, not the same file to both.