GSEs may be bigger but also healthier than before. Though still a huge market, I also think the global OTC derivatives market has become smaller since 2014 (you can check some estimates at the BIS). That being said, it's 10 years after 2008 and there are plenty of signs that we're in the 3rd bubble in 20 years time.

Nosebleed valuations in tech. Second highest Shiller PE in S&P. The median PE of the S&P is higher than in 2001; so it's more broadly carried (can't find source right away).

It's also the age of the ETF, which was a good thing. Except that by now the industry may have created some real beauties. Remember XIV?

Also government bonds; as much as I love Italy, somebody bought the 10yr of that country for a 1% yield in 2016. Somebody also bought those Mexican 100yr bonds.

Even something as silly as Dogecoin's marketcap standing at $600 million suggests that the entire world is in the middle of a speculative binge.