Good on the receiver - meaning nothing odd about it. I was a bit afraid you were trying to use some other crazy off brand. Very standard, so nothing to worry about there.
I set companion to emulate the X9 Lite S, which you said you have, but the file complained that it was for an X9 Lite, which is an earlier model. There shouldn't be any real issue currently beyond that, but it would be best if you change the radio type in your copy of Companion to reflect the correct model. That will make sure that you get the correct firmware in the future, and not something that may only sort of work. (Settings, Settings, and the second line that says "Radio Type". Of course, if you did already update the firmware...better redo it with the correct one.
Your file looks good, and should be working correctly on the radio. The Elevator stick (right up-dwn) controlling Ch1 for your throttle, and the Aileron stick (right left-right) for steering
Note that on the Inputs tab, you can change the name of the new source from the default. So "Ail" could be "Str", which may make things clearer in Mixing so you don't have to translate from the aircraft names as often. There is a way to change the actual stick name, but that effects all models, and could actually lead to more confusion.
Are you using differing "Stick Modes" on the radio? ie Mode 1, where the non centering stick is on the right? If you don't tell Companion, under the Settings about that, it will use Mode 2 as a default. And then in the radio things get moved around in an attempt to correct it. Or vice versa. They need to be the same. That may be where the problem lies....