"Sapiosexual" is attracted to intelligence, and noetisexual (ME!) is attracted to the way someone thinks independent of IQ... both of those are heavily influenced by words and wordplay, but very often especially noetisexual will also have to do with artistic sensibility, kindness, compassion, sense of humour that isn't necessarily wordy...

Turned on by words *strictly*... that one I haven't heard, but... I kinda like the thought of it. ;)