I know I'm late to the party, but if you're still looking for makjang dramas I have a few suggestions if you're willing to take them :3.
Jang Bori Is Here is an ABSOLUTE must (it's my favorite drama ever). Some makjang elements: amnesia, reversed roles, a sisterly rivalry, a WICKED crazy villain (personally, Lee Yoo Ri pulls off this role the best out of all the makjang dramas I've seen), and a lost child.
Golden Rainbow is also another one I liked, although it's not as makjang as Jang about Is Here, they both have similar/about the same makjang elements.
Finally, I love Five Fingers (mostly because it's piano-based and I'm a pianist myself lol). Some makjang elements: birth secrets, a conniving mother, a brotherly rivalry (not unlike Jang Bori), family favoritism, and revenge (the whole drama is based on Ji Ho'a revenge anyways, lol).
Happy watching and feel free to let me know if you like any of those three or not!