At one point, I posted a thread stating SMN as tank in dungeons and to think outside the box. Some of you tried and worked well. Some of you thought it's not possible. It's not end game boss. But here's a video of a WHM soloing Chimera in Cutter's cry.
Cutter's Cry Chimera Solo by Haruhara Haruko
Good job Haru and I hope you don't mind me linking this video.
With that said, SMN can easily do this due to our pets and our healing and our dots. I can see most of the bosses that do not have adds can be easily soloable.