Great list, even still 10 months on. Kudos Heidi!
A new exchange I feel that's worth adding to this top list is Covesting. If you haven’t heard of them already, Covesting is an exceptionally secure user-friendly, cryptocurrency copy-trading and exchange platform.
The Covesting platform services are attractive to both novice investors and professional traders. They cover a wide range of cryptocurrency trading aspects, from education, market analysis, and trading ideas to liquidity aggregation, copy-trading and algorithmic order execution.
Like the ones you have listed here Covesting is centralized, as well as DLT registered under Gibraltar jurisdiction, which follow the strictest KYC policies for safety and security.
Its an all encompassing platform that not only provides users with the best tools but an all-in-one resource for everything crypto and trading related.
I'd have to say though one of the biggest attractions, is the user experience and user interface design. Its simple and intuitive, which is necessary when already under the pump from the stresses of crypto trading.
The site is in the last phase of its beta version due to launch this quarter (Q3, 2018).
Worth checking out if you haven't already: https://covesting.io