This article: https://www.reef2reef.com/ams/cirrhilabrus-complexes-inferiority-need-not-apply-1st-revision.352/ by Evolved, along with its easy-to-read flow chart of cirrhilabrus, is about as good as it gets for choosing fairy wrasse tankmates. Look for wrasses that are in different boxes from the one you've got (most of them are), look for boxes that are green or yellow for peaceful wrasses - watch for wrasses in red, such as the whipfin or Scott's fairy wrasse. Then look at the wrasses themselves, preferably in person. (I'd seen photos on the 'net and was unimpressed ... until I saw an orange-backed fairy wrasse in a LFS!) Find out how big they get, whether they're suitable for your tank, and whether you like their colors, finnage and price-points. When you see one that makes your breath catch in your throat ... research that fish, because it's the one you want to look at and care for for the next five years.