There are some advanced trading techniques that I know are being used within the traditional financial markets but are these types of techniques being used in cryptocurrency yet or is the liquidity too shallow?

The techniques I am referring to are

VWAP (volume weighted average price)
Direct level 2 trading and COT (commitments of traders analysis)
Iceberg trading
HFT and Algo bots

Are people using these techniques yet? I assume algo trading is being used already