Two Opuntia species growing in L. williamsii habitat in Nuevo Leon.
Second one might be O. tunicata.
Check out the branch visible in between and behind it and the O. leptocaulis that is suggestive of being either intermediate or a third Opuntia.
Opuntia engelmannii growing with a L. williamsii population in South Texas
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Opuntia macrocentra with a L. williamsii var echinata population in West Texas
Opuntia rufida with a L. williamsii var echinata population in West Texas