You and Both know that there are a few handful of Mangas which are both interesting and Ecchi so I will also give you a list of Non Ecchi manga
Tower of God
Natsu no Taizai
Waga nawa umishi
Arpeggio of Blue Steel
Yamada Kun no Witches
Noblesse
Kingdom
The Breaker
The Breaker-New waves
Holy Land( Please Check this out)
Suicide Island
Tokyo Ghoul
Bleach
Ultimate Legend-Kang Hyo
Golden Time
Akame Ga Kill
Great Techer Onizuka
Parasyte
Kiss my Ass
Shingeki No Kyojin