I think she would like Punz best for her girlishness and how she never lets Flynn get the upper hand, like how Eilonwy is with Taran. I really don't see her liking Ariel much at all. If they knew each other I think they'd butt heads a lot. Eilonwy is so practical and likes doing things her own way, and Ariel (while much more irrational in her ways of thinking) is also that way and they'd clash.

I think Eilonwy would love Jasmine's sarcasm and her high self esteem.