This is how in brings better typography:

Stylistic Alternates (salt) replaces some characters with their stylistic alternates. For example, the single-story “g” and “a” could be replaced with their double-story forms, and vice versa.

Stylistic Alternates are used mostly for their aesthetic effect. However, sometimes they can also help improve readability as in the case of the finial of lowercase “l” and the serif of uppercase “I”.

Fonts that have this feature includes Inter, Source Sans Pro and Open Sans. Try them with text like Illustrating and Illegal.

You may also be interested in swsh and hist.