A rather popular gallery plugin by GoDaddy that offers 3 types of blocks: Carousel, Masonry and Stacked:
Carousel
This block has a basic set of options. I particularly like the fact that you can select your block’s height, which is something that, surprisingly, very few slider/carousel blocks offer.
The block supports full width, allows you to add a background image and also has the possibility of inserting CSS filters into the image. This is a common feature to all three block variations in this plugin:
I also love the fact that the carousel is fully functional in the editor, and looks close to the final result.
Here is the carousel in action:
Masonry
Once again the settings are not overwhelming and are in fact very intuitive even for beginners:
Here is the masonry gallery in action:
Beach 
Liberty 
Station 
Phone 
Tea 
Grass 
Edit: The Masonry blocks seems to be broken -or at least a bit unstable- at the moment. Either that or is conflicting with another plugin, becuase this is what it should look like:
But this is what I am actually getting in the frontend:
Stacked
And last, but not least, the “stacked” block, with a “grayscale” filter: