Here is some cool Ghost themes for blog. They are creative, minimal, clean.
Codex is modern ghost theme which fits writers, photographers, travelers and all others who like to tell their mind in a stylish way.
Basic blog style for storytelling blog, and grid style for photo-centric blog with Perfectly calibrated typography for each layout.
Privado is Minimalist and Responsive Blogging Theme for Ghost based on Twitter Bootstrap.
Sylva is a clean minimal & modern content focus theme for ghost blogging platform.
Curio is a clean, minimal, modern, unique and minimalistic theme content focus theme for ghost blogging platform.
An ideal theme for minimalists or lovers of whitespace.
Forest is a woody theme dedicated for Ghost.
Anima is a responsive, multipurpose Ghost theme with filters, reading time indicator and search system.