Yep I would definitely guess 4a/4b with some little 3c curls mixed in there.
Shampoo: Shea Moisture Coconut & Hibiscus Curl & Shine
Cowash: Curls Unleashed No Restrictions Conditioner
Deep Conditioner: Shea Moisture Deep Treatment Masque
Leave-In: Curls Unleashed No Boundaries
Oils: olive, argan, and Jamaican Black castor oils