For me it’s Dell, when I bought my (used) Latitude E5470 there was even Ubuntu running officially on it IIRC at the time. I like the small Dell because there’s ton of them 3+ years old, parts available everywhere, they are pretty solid and made for corporate world, they are no toy like Asus. A $1500 model can be had for like $200-300 after a couple of years. I installed MX Linux on it, everything works perfectly without touching or configuring anything.
For instance now you can find a nice E7480 for 200-300$, with Core I7, 8GB or 16GB RAM, SSD, 1080p, NFC, fingerprint, USB-PD dock compatible, etc.