Most of the K11 (If not all) are Chunins, Neji was a Jounin.Actually, Sasuke is S-rank missing nin. He isnt a part of Konohas military enymore, so why should he be classified as Genin by them?
And yeah, Naruto is still Genin, but currently ranks have no meaning in manga. In fact, after Pain invasion Naruto was considered more like a village hero than anything else.
No, he wasnt. Only Shikamaru was promoted to Chuunin.