Forgot a couple
Dell, Cisco
As expected when Intel processors power virtually all x86-class servers, the vendors all hopped on the Skylake Xeon SP party bus. They hope to ride the server update into the market better than each other, and get every last upgrade penny they can pocket. Cray Cray's XC50 supercomputers and CS line of cluster supercomputers …
Cisco and Dell are special, el reg gave them dedicated articles
http://www.theregister.co.uk/2017/07/11/ciscos_fifth_ucs_server_generation_surfaces/
http://www.theregister.co.uk/2017/07/11/dell_14g_servers/
possibly those vendors announced their gear (again) ahead(few hours early?) of the CPU announcement, not sure
https://www.overclock3d.net/news/cpu_mainboard/intel_resorts_to_dirty_marketing_during_their_skylake_sp_xeon_launch/1
They really do come across as desperate - 58 separate SKU's and they end up comparing a Xeon with a desktop processor (both underclocked)
Don't Forget TYAN
TYAN's new HPC computing platforms based on the Intel Xeon Scalable Processors are designed for the heavy computing workloads of big data and high performance data analysis applications. The high-density platforms are targeted at the HPC, Machine Learning, and Technical Computing markets
http://www.tyan.com/campaign/intel/xeonscalable