The keywords of pants for NATURAL type is
CASUAL and WIDE
As NATURAL type tends to have long slim legs, wide volume pants are good for them to balance it out. Long flared pants is also good for them to make A line silhouette. Slim or slim at their calves pants make them look too skinny. NATURAL type also mutches casual design and volume pants like cargo or harem pants.
Wide leg pants
Sailor pants (lower waist is bette)
Sabrina pants (wide silhouette is better)
･Slim and skinny pants
･Short length like hot pants, bermuda and Capri pants