Gekkan Shoujo Nozaki-kun, Watashi ga Motete Dousunda Recommendations
These shows aren't too similar but they still have some similarities. They have magakas as characters, their humor is similar and they have romance elements.
Main difference is the fact that Nozak-kun is not really reverse-harem while WatashiMote is.
I would say that both anime have the same lighthearted theme that gives the viewers a sense of friendly warmth between characters. Both anime are set in a similar high school setting along with very familiar stereo types of characters. I can pair off characters from each anime who have similar personalities and interests. Both anime follow the same guide lines when producing romance between characters while also tuning the scenes into a gag. If you liked one of these anime you are bound to enjoy watching the other!
This is, in a way, similar to the story of Watashi ga Motete Dousunda because both main characters like anime and manga. Of course unlike Kae, Chiyo has a crush on the main male character and doesn't want to see him with anyone else but her, however the comedy between the two anime is similar and in my opinion Kae and Chiyo have similar reactions to different type of situation. Plus every fan wants Kae to end up with one of the boys and Chiyo to end up with Nozaki even if both girls have some issues on the way to get what we want.
The comedy is hilarious. One of the funniest anime out there. The romance is a bit meh but the comedy is the masterpiece.