I'm a pantser at heart, but my process has changed over time.
Most of my stories start from a flash of inspiration, an image in my mind. I just have to dive in and capture it the best I can, start feeling out a context for what's happening. More isolated scenes will pop into my head during that time, and then it becomes a huge game of connect-the-dots and fill-the-blanks. Depending on the story I can spend a very long time in the ideation phase, and I always come back to it.
Then I just write drafts, refining what I have and fitting new ideas as they come. Plot is an afterthought, I prefer to let it emerge as organically as possible while I build up the world and characters. I take lots of notes along the way, but generally speaking I will only make any sort of outline much later, usually a loose one.
It's not an efficient process, but it's what I find most enjoyable. The wonder of discovering a story as it unfolds, the challenge of unfucking the tangled messes my methods invaribly create, the joy of epiphany, the deliciousness of unfettered creativity in flow state... Can't put a price tag on that.
But it would be super neat if I could also consistently create coherent plots and finish stories in a reasonable time. Much as I love my novel series, the juice does leak out over the years and I get a bit bored working on the same stuff. I have lots of stories to tell and I can't afford to spend decades spinning my wheels with each one.
There has to be a way to make outlining work for me, where I don't lose much of what I get from discovery writing. I have some thoughts on that, which I'll try to implement for my next big thing.
TL;DR: I'm a pantser with a dash of plotter, still looking for my optimal workflow.