CDR dependent champions got absolutely murdered by Ability Haste champions like vladimir and sylas have an average winrate around 46%, top lane vladimir even dropped down to 45% because there are no options to get cdr effectiveley. Some vladimirs in challenger ive seen building like 3 codexes additionally to a completed cdr item first.   


Champions are obviously effected differently by the cdr nerfs. Champions like Akali or yasuo for example dont really care about any cdr but champions like vladimir and sylas highly depend on having their cooldowns lowered in order to survive the lane.