Thinkpads tend to have excellent build quality, solid firmware and well thought out design. Price to performance on second-hand models is always outstanding and their popularity ensures hardware compatibility with Linux.
Of the brands you named, I just don’t trust the hardware. Tuxedo computers for example uses Tongfang white-label computers that they just slap their logo on. Quality control isn’t as thorough as Lenovo’s, firmware is sketchy, TDP tends to be all over the place and keyboard quality doesn’t come close.
Thinkpads also have-- and I can’t stress the importance of this enough-- a nipple. I don’t really use it, but if you try to take it away from me I’ll bite you.