I have a fanless, reasonably-light linux laptop from tuxedo. Unfortunately, it seems their current models are more powerful, more heavy and probably not fanless.
They aren't fanless, but I really love my XPS. Setting aside GPU related tasks (obv) this is the fastest thing I've ever sat in front of, by a wide margin. FWIW even at max the fans are audible but not ever loud. Maybe if you were working in a silent bank vault or something they would be, but in what I consider normal day to day usage they are never even close to an issue. For non-intensive tasks I don't hear them at all.
I have this system because by a crazy circumstance I was able to get it for nearly free in like-new condition. I would likely not have spent full price just because I don't have that kind of cash around most of the time. I absolutely love it. FWIW if you look at one of the others with the same chassis/keyboard design you'll find some repeating criticisms in the reviews - I've found most of them to be understandable but non-issues in the real world, so let me know if you have questions. Obv all depends on your use case...
The one thing I wish is that this was the 32GB model - but again, the price was very right. If I was buying that's what I'd go for. 16GB is plenty most of the time, but not all the time.