Hands down my top recc for adorable awesome FL's is Rainie Yang in Devil Beside You. Everyone who watches this drama falls completely in love with her, there's nothing not to love.
Here are some others that have non"strong FL"s... but with strong and adorable personalities, or who are easy to relate to because they're cool and nice.
The Only Girl You Haven't Seen (warm, caring, natural, sensible, smart, a little bit badass)
Lie To Me (probably Yoon Eun Hye's best acting performance... natural, sweet, kooky and sexy)
Devilish Joy (does this thing I found very unique where she's cute/sweet/adorably impertinent... and yet also graceful and beautiful at the same time... she's an excellent actress)
Yankee-kun to Megane-chan (precocious, optimistic, outgoing) ((this one is heavy on the comedy, light on the actual romance, btw))
Eternal Love of Dream (cute, curious, sweet, precocious)
Oh My Venus (cute, natural, awesome, and really funny)
The Master's Sun (I really like Gong Hyo Jin's natural way of acting. I think this is one of her best roles, because her character here is lighthearted. In It's Okay That's Love she plays a much more complex character who has a lot of defenses. But here she is meant to be light, funny, sweet, sunny and it's a great role for her.
Shopping King Louie (innocent, sensible, caring, determined)
Taiwanese version of Meteor Garden (cool, cute, badass, brave, caring)
Poong the Joseon Psychiatrist (tenacious, funny, patient, clever)
Also, I looked over your watchlist so far and I think you would love The Rose. Same ML as ISWAK too.
