magento 2.4.1 Sort by product name not working as expected

I’ve some of products, Which names start with word “adidas” and some of products “Adidas” .

Like, adidas Tiro 13 Short, adidas Techfit Bra, Adidas Techfit Bra12 etc.

I’ve set Default product listing sort by to “use config setting” and at global level I’ve set it to “Product Name”.

When I visit category page, I can see name not sorting not wokring can any one tell me