The spec of the Sportline still includes HUD etc. You can view either the current brochure for spec or the Skoda website and it details it’s still included.
The 85 and 85x Sportline are just 2wd or 4wd versions of the same car which they used to have in the past but removed the option when the 24 model released so they are just going back to how it was .
The MAXX is the same spec car but your just getting the upgrade package of the MAXX pack at a discounted rate. It’s not a specific model of car . It’s quite common for this to happen on motability and several brands do it to give you more discounted options. On occasion some options get included free of charge.
Again if you download the brochure it details what the MAXX pack adds to the car if you buy that .