You didn't read I"s or 100% Ichigo? Those are quite good as well, so I recommend since you liked Nisekoi, WNL and Yuuna.
I've heard of both of those before, but I've never read them. Since they're both longer, more famous series, I'm saving those for a bit later down the road when I may have time to read a series that long more quickly. I did, however, just finished Koisome Momiji and really enjoyed the experience. The chapters were super easy to read, and the end of each one really made me want to jump right into the next chapter. You could definitely tell around which chapter the author learned its fate had been decided, but nothing really felt unnaturally rushed. Their artwork has definitely become more polished in Yuuna, most certainly being suited for an ecchi series, but it was still really good in Koisome. Much like in Yuuna, I was able to feel something for all of the characters. The updated listing:
iShoujo > Koisome Momiji > Double Arts > Kagami no Kuni no Harisugawa > Cross Account > Himedol > Love Rush > Pajama na Kanojo
Most of the really short series tend to not be fully translated, if translated at all (thankfully realized that before starting Sporting Salt lol). I may read Anedoki next since it's also on the shorter side and could give me a taste of what to possibly expect from the author's more famous work. I may also start Magico since that looks pretty interesting.