These are some of the gallery themes, or layout, options in the WP Media Folders/Galleries plugin.
The custom square grid is set to display the caption and not title on hover, any of them can do that
None of the custom galleries include border design options like the standard slider has (oddly enough), but I can code borders in
(Photos are F2 Bengal Cat “Luna” and her kitten “Calvin”, 2005)
custom “slider” layout, has a few more options on the lightbox, default doesn’t have borders

custom “masonry” layout, this one does not crop the images

custom “square grid” layout
custom “portfolio” layout – pretty much the same as square grid but adds the title under image, uses a slightly different font and uses an icon on hover

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Luna and kitten Calvin
Luna and kitten Calvin
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Luna and kitten Calvin
Luna and kitten Calvin
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Luna and kitten Calvin
Luna and kitten Calvin
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Luna and kitten Calvin
Luna and kitten Calvin
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Luna and kitten Calvin
Luna and kitten Calvin
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Luna and kitten Calvin
Luna and kitten Calvin
standard “slider” layout – lots of design options on the image border
custom “material” layout- I rather like this one, it looks best on a page with white background
Luna and kitten Calvin
Luna and kitten Calvin
Luna and kitten Calvin
Luna and kitten Calvin
Luna and kitten Calvin
Luna and kitten Calvin