MYGAs may do very well here for a while. Right now you can get around 3.75% for a five year. But they're like a CD, where you're locked in.
There's the fixed indexed kind, but your surrender period is 7-10 years and you're only going to average around 4% to 5%, maybe. Bleh.
These things REALLY depend on the individual and what they need. I can see them as a substitute or partial substitute for fixed income, and only if the investor is risk averse. And also, if bond yields are peaking soon, regular bond mutual funds will do VERY well, and they're fully liquid.