Colour Profiles

Are there any differences between the first two? 'Display' seems a little richer/ saturated, but I can't tell properly.

Display and iMac were the default options.

I assume that "display" is a setting for other monitors and the "imac" setting is what the apple team believes is best for the imac.

Dont know the difference is but they're probably just aproxamate setting for the typical aspect ratio