Nice looking Sims, too bad I already finished fixing my existing Hobbyists. They will come handy when I move in some of my existing ones for breeding.
By default, Science Hobbyists wear botched OFB salon hairdo, and female Arts & Crafts Hobbyists wear hidden clone of OFB pixie hair included in FT, but I prefer your choice.
It's really lazy for EAxis to give Film & Literature Hobbyists the same appearance as NL Mr.Big/Diva. I gave mine different outfit for easier identification.
As Iconic Hobbyists are not service NPCs, they don't have fixed uniforms. With their random clothes, it's hard to remember who belongs to which club. They can be generated with their proper hair/outfit with Townie Gun, but then all discarded Sims will clog up the neighbourhood. (I learned it the hard way, having to Delete'2 about 30 useless Sims.)
These are nice. But, Emma, I don't need another hood now. I have too many on the go already. What to do?

If your existing Hobbyist Sims have the same gender as Emma's, I'd suggest using
Alt Sim Surgery. With this plugin, I can recycle dormies for several generations without going stale.