Some background about Harry Butterfield ...
Super Burro's Tail (XSedeveria 'Harry Butterfield')
This plant is a Dick Wright hybrid of Sedum morganianum (with E. derenbergii) also marketed as 'Super Burro's Tail' (though I'm not sure what's super compared to the original honestly, and not just different). To the extent it is a hybrid of morganianum it is quite similar. There are some useful, properly identified pictures here showing two forms and a range of flowers.
https://www.crassulaceae.ch/de...
The flowers may be virtually indistinguishable from morganianum (to my eyes anyway) when they are not flared wide open, and I don't think the plant flowers a whole lot anyway. But based on the leaves, I would say Tiffany's plant is a match, and I will endeavor to move that set of images to the Butterfield entry, starting shortly.
That said, I would appreciate you all taking a look at the images we have for Harry Butterfield and highlighting the ones which are clearly not that cultivar. I'm seeing 3 right now but maybe if you don't mind, we could try to clean up that entry as well, while we're at it.