So, most of this is available (for the recent data) on the Stats page in terms of block by block stats.  I've got a luck graph on my admin page that I might be able to make cacheable to be public, but would take a bit of time.  There is pre-cached luck as well on a per-block basis, but unfortunately it has some qualifications just based on how it was added, but I could easily add that to the stats for blocks found.

The qualifications are:
1) We only save full data for the last 1hr of stats, so if we don't find 2 blocks within the same hour, we don't have an easy way of seeing how many shares on that particular coin were mined.  That really only happens on either litecoin, or dogecoin if we skip mining it for a decent bit of time, almost all the rest of the blocks have luck tracked.
2) The luck is based on the found block difficulty, which is not necessarily the difficulty the shares were at.  For example, if we mine dogecoin as difficulty is on the rise (say some shares at 1k, and then some shares at 1.1k), then stop mining because diff is too high, wait a bit until it drops to 800, and immediately find a block.  The luck is based on all of the shares being submitted against a 800 difficulty blocks (which is incorrect for luck calculations, but good enough for my purposes).

I just worry with showing these stats that people will freak out.  Better option is for me to properly track luck values (just another thing on the list), but that has some (smaller) subtleties as well, since we buffer inserts into our database for share submissions, so data will be off based on when the block comes in compared to when shares get inserted (although very slightly).  Maybe I'll work on this in the coming days, luck would be nice to have publicly available.