Put simply, they all offer something that the Raspberry Pi doesn't. The Raspberry Pi is a great bit of hardware, but it has been built within a specific set of constraints and for mass appeal. These SBCs take what the Raspberry Pi brought to the table, and take it further.
I've also had a chance to use all of this hardware, and they have all been tested to ascertain its quality, reliability, and whether it delivers on the promises made.
The ASUS Tinker Board S is on the list because it is the perfect choice for a hobbyist or someone who wants to learn their way around what these boards can do. It's a nicely designed board that is aimed at making it easy to use. The board is clearly labeled and that means less time looking at a manual and more time working on projects.
Also in this list is an SBC that is better suited to harsher industrial use, which allows for projects in environments that would otherwise destroy a lesser board.