It is similar, definitely - in their marketing, formulas, textures, and the claims they make! In my opinion Neutrogena is one of the better drugstore brands for your skin (compared to Maybelline, Covergirl, etc). I definitely recommend Neutrogena for dupes of Clinique products! For instance, Clinique’s Acne Solutions foundation is very similar to Neutrogena’s Skin Clearing foundation.
Clinique Acne Solutions Liquid Makeup - $26
Neutrogena Skin Clearing Liquid Foundation - $12
Clinique has more options when it comes to products however, and if you have very sensitive skin, or allergies to ingredients in cosmetics, I recommend going that route.