Ronby theme is perfectly suitable for 6 niches (Agency Business, Medical, Restaurant, Fitness, Construction, Fashion Shop). Every niche is designed according to its purpose. In this theme every home has its own unique elements and inner pages which is basic need of niche, while most themes come with same common inner pages and elements for all home variations.

Demo: https://themeforest.net/item/ronby-6-niche-business-multipurpose-wordpress-theme/23555308