Random thoughts: first, Stand names and abilities often do not sync. This makes a bit of underlying sense, since you do not want to give away your Stand's ability to an opponent unless you have an overwhelming advantage.
Billy Ocean comes across as one of the ones with a fairly simple esoteric ability. Something that provides a lot of flexibility while being easy to descibe, like Jolyne's Stone Free. Maybe less direct-combat oriented, but still good at fights since it can come at the situation in unexpected ways.
Deep Purple is pretty much the opposite. Either very powerful physically with a nasty ability, like Purple Haze, or a more normal combat ability backed by a powerful ability like Hanged Man. I have the sudden image of Deep Purple being able to jump between TV screens and camera phones and the like to suddenly close and attack someone.
Crawling in My Skin really makes me wary. Something that small? It is probably very fast, and has impressive range, possibly a remote or independent Stand. The obvious ability is that it gets inside someone and messes them up, though I can see it being able to detach into multiple pieces or be lots of little Stands.
Chemical Romance feels like a pure esoteric. Something that can be very powerful, but not directly - the Osiris Stand or Dragon's Dream comes to mind.
Yes come across as a punch ghost. Possibly with a slight ability that occurs when it actually punches something.
As for Barbie Girl.... all the circles other than the chest-jewel one are common parts of articulation on a doll, though it is lacking any around the waist or legs. My gut says it's a puppet-type that controls another person's movement. Rotation of the chest-jewel is probably an indicator of the power activating.