Here is the big thread on grabby vs slip. It mentions lots of products along the way. Post #2 mentions a few grabby leave ins.
Leave-in "grabbing" your hair OR leave-ins that DON'T have slip
Not a grabby leave in, but Ecostyler Krystal is a grabby gel that magically makes my hair clump. I also like BRHG.
(blog to help new wavies)
2a (nc.com) 2bFi (Fia), very fine, thin, low/normal elasticity, porous, CG, doesn't get weighed down
Cowash: Tresemme naturals
Rinse out/leave in: Renpure Organics (red)
Curl enhancer: FSG
Gel: BRHG, Salon care aloe, Ecostyler Krystal (normal dews)
PT: ION effective care, IAgirl's gelatin PT
Low Poo: renpure (red), Ion swimmers