The 01/W's proprietary Waveshaping allows a sine wave to become a distorted square wave. Look for Soundfonts labeled "01/W Disto Lead" or "Synth Lead 01." These are not analog; they are harsh, digital, and aggressive.
When a producer utilizes a Korg 01/W Soundfont today, they are usually seeking specific "ear candy" associated with the era. korg 01 w soundfont