With more fish in the tank, you may find your clowns out and about more. Mine roam all over my 120g now that there are other active swimmers. In contrast, the clowns in my Solana hang out together, in a small area. There's only one other swimmer in that tank.
A yellow tailed damsel is a very pretty active swimmer. I've never had one aggressive to anything but another yellow tail damsel. I tried a group of 4 and the last man standing in the 120 (removed 2, one died before I could get it out) is now a model citizen. He was the meanest of the 4, but doesn't bother non conspecific tankmates. I also have 2 green chromis that are active and doscile. My larger swimmers are a Foxface, smaller Kole tang and a Blue Jaw Trigger. With all of those fish moving about, the dottyback is still a little shy (but not bad) and the YWG and mandarin spend their time in the rocks, like gobies and dragonets do.
In previous tanks, I had a Yellow Coris Wrasse and a McCosker's wrasse and they were both always out and about. Flasher wrasses will give you the color that a flame angel gives without the risk of coral nipping.
For people to give good recommendations you will have to post your tank size.