If you mean a lure that “imitates structure,” the best match is usually a bait that imitates the forage living on or around structure: craws, baitfish, and finesse worms.
Switch away from craws if fish are suspended or chasing open-water bait; then a minnow-style bait like R&R Tackle Co. | Premium Saltwater Fishing Tackle 3.5in Minnow Fluke Tail is better.
Switch away from finesse worms if the cover is thick and fish are buried in it; then use [American Baitworks Co. NetBait The Rascal 3.5" Creature Bait – Versatile Flipping, Punching & Trailer Soft Plastic (8