I typically have my writer's fulfill the Painter aspiration first -- they can then write all the "emotional" books like Romance, Playful, etc. without having to be in the appropriate mood.
My starting out writers will often do the Gnomie trilogy (Night-night Gnome!, Gnome on the Range, Gnome Alone). When they're able to write Romance books there's my Seasonal Romances: Spring Horizons, Summer Passions, Autumn Harvest, Winter Delight.
Some one-off titles:
Playful: 1001 Clean Jokes for Dirty Occasions
Confident: It's All About YOU!
Workout Guide: The Lazy Sim's Guide to Fitness