Last year I purchased what I thought were two Beauty of Moscow (white) lilac shrubs. This year both plants bloomed, but I'd like some help identifying them both, if there's anyone out there who might know. I compared the flowers with the photos from this website - http://www.lilachillnursery.com/varieties - and was not able to find an answer.

I'm uploading a photo of each in hopes someone can please identify them. Thank you!