Short-term trading, in addition to observing the changes in open interest, trading volume, and fees to monitor market maker movements, actually watching real-time naked candlesticks is more direct. The more a single trader dominates the market, the easier it is to perceive such changes.

You can find a recently traded altcoin and keep an eye on it on a 1-minute chart for a day, especially during periods of significant volatility, to observe the frequency of price fluctuations. You can really sense which price levels are being aggressively sold or bought by market makers, and which are being traded by retail investors. Sometimes, you can even imagine the trader on the other end of the line pressing buy or sell buttons in this game against you. This feeling is hard to abstract into a phenomenon or characteristic, but I believe that traders who often watch real-time charts will have this sense to some extent.