I've always been a heavy precummer, but edging is what got me squirting and also precumming much more. I'm very familiar with this and have shared about it before, so I'm going to plagiarize myself and copy/paste what I've said about it-
In addition to precumming a lot of the clear stuff, I ooze and squirt some cum sometimes when I'm edging for more than an hour, before I cum- I don't know if that's the same phenomenon being described here. It feels like a small orgasm and it makes me even harder and more sensitive every time I squirt. Sometimes a squirt will go about a foot or two, which is annoying because then I have to remember to clean it up. Once I do cum, it's super intense and on occasion I'll stay hard and I can bust another nut, but usually I'm done.
I was concerned at one point that maybe I was just squirting some piss, even though it's the same consistency of my cum (which isn't sticky, but rather more opaque and copious) so I did some experimenting to determine what it is. Almost always now when I start oozing and squirting, I take a break from edging to take a leak to empty my bladder. Once I start up again, I will continue to keep making a huge mess as usual, so I know it's not a mixture of urine and cum. Not entirely convinced, I have done some "quality control" and tasted it, and it has the same taste as my cum, which thankfully doesn't have an unpleasant taste.
Also, if I squirt and it ends up mixing with my lube, it gets somewhat frothy. When I cum and stay hard, and then use my cum as lube to keep jerking, it gets very frothy, so I know what I'm squirting is a mixture of precum/cum since it's still frothy, but not as frothy as just pure cum.