The Maratha Kunbis in Sonawane Surname, all come in 96 Kuli Marthas.
It doesn't belong to one Particular community,it's found in all castes.There Are Brahmins,Marathas,Kunbis,Lonari,maybe even Sc with surname Thite.Marathas may use Thite- Patil so it can be easier to identify their caste.I'm Deshastha Brahmin with Thite surname
Sable surname is used in many different castes in Maharashtra Brahmins, Marathas, kunbis, leva- patil, mahars and kolis have Sable as their surname. Sable were the main priests in ancient Maharashtra. Maratha Sable and mahar Sable were warriors. Sable never accepted Shivaji as king as he belonged to an inferior caste.
In Dhule, Nashik & Jalgaon and rest of Maharashtra, there are so may castes which have surname Sonawane, include Maratha, Koli, Mali, Teli, scheduled tribes, sutar etc.. but Largest community is Maratha Patil who holds this surname.