Kimi Koi Limit - One girl is "boyish" in appearence. Kind of melodramatic story, not much innocence.
Shitsurakuen - MC is boyish in nature, series is dismissed as chauvinistic during the buildup. Harem series so not all love interests are shy.
Flower Flower - MC is a princess that is mistaken for a prince, "boyish" looks. Love interest is a violent snob.
Blue Friend - Other female lead is boyish for being a star athlete, very melodramatic story with attempted suicide.
14 sai no koi is not yuri, but I consider Kase-san to be the yuri version of it. Lots of blushing and shyness. It's by Mizutani Fuka who did these yuri titles:
Lonely wolf lonely sheep - female lead is tall and rides a motorcycle, perceived as boyish but is self-conscious and shy. Melodramatic story with self-harm.
Like a Cinderella - short hair, wears casual clothes a lot, very shy. Cute stories with no drama.