Total Recommendations: 2
Both have a female protagonist with short hair that is interested in foreign countries, both have a blond haired girl named Alice that loves said protagonist. Honestly, this was the reason why I chose this one myself! It turned out good. The humor is certainly not similar at all, given this one aims with more serious tones and life lessons, well Kiniro Mosaic was mostly comedy throughout. However, that one still had its serious moments, though they are far and few. But, the similarities alone should convince you to give this one a shot, too. If not only because it has extremely similar protagonists, it does not help at all that both Alices are equally obsessed with their respective protagonists.
Both anime do not try to even draw the characters you see in the background, but Pani Poni Dash does not even try to make them characters at all! Sometimes, they are even FRUIT. Aside from that, both deliver extremely random comedy, but Pani Poni Dash does it in a MUCH zanier and quicker fashion, hence the manga being called "Pani Poni" well the anime is "Pani Poni Dash" which implies that it delivers its comedy on its own pace, which they chose to be undeniably rambunctious and rapid. Pani Poni Dash also has a much more colorful cast of characters, with several classmates in all of the three classes, alongside the teachers themselves. They all interact with each other in funny ways and the experience is highly memorable. Forget introductions or analyzing the characters, too, as they are all just introduced right off the bat in biography cards that pop up when you see them for the first time up-close.