Is there any way I can have the album titles below the thumbnails?
Not for the Mosaic layout that you are using. You can get titles below thumbnails for the square layout and the Masonry layout, not the others.
Also, can the thumbnails all be the same size? Like a perfect grid?
Not for the mosaic layout.
There are two aspects to this: the size of thumbnails that you are pulling, and the layout that you are using. In the mosaic layout, you are respecting the aspect ratio of the original photos, so you will never get same-sized images.
Note that the mosaic layout is a perfect grid – it lays out the photos in a way such that there are no gaps, all spaces are filled, and all rows are of even length regardless of the number of photos. I believe the term you are looking for is a grid of square thumbnails (which may not be a perfect grid and your last row may have empty slots).
If you want images of the same size, you don’t have too many options in SmugMug’s standard sizes – the only size that will give you a square thumbnail is the tiny
size, where the thumbnails are just 100px wide. You can then use the Square or Masonry layouts to display your photos, but I don’t think it looks good with such tiny thumnbails.
Since your images are not in the same orientation, other SmugMug settings will give you images of the same size, but different orientation. In other words, if you don’t pick the tiny
size, some thumbnails will come out in portrait orientation and some in landscape. That will automatically prevent you from getting a uniform layout.