If follow the original Model 3... both LR and P has same battery pack.

Not sure if current highland has higher output battery pack, the capacity looked identical though. Both are NMC usable 77.6kW battery packs.

Yes, Performance using NMC. Basically LFP is also battery, will be damaged if left over at 100% for long time just less apparent than NMC. Battery damage is when it has max capacity 100%, or too low charge... so weather NMC or LFP still will kena.. just LFP is less, and LFP has to go to 100% for the calibration to be more accurate. NMC has bigger voltage delta hence no need do so.

Side note, the Tesla battery BMS is smart la. You can set it to charge to just 80%, or even put it so it starts charging to get to 80% at 7am for example. So just reach home and plug in. next morning by the time u set its ready for you. And even better the battery is warm and ready to go.

What Tesla advertises is WLTP, and what is shown in the car is EPA. And there's another based on your driving history Wh/km estimated. So there's different numbers. Mine is a M3LR 18", it shows 550km at 100% (probably less now).

Usually if 550km WLTP, probably 80% is about 440km ish would be ok. but being a performance model being floored a lot I think eventually you get much less  I'm guessing the performance is as efficient as the LR, but due to the 20" and wider tires for grip... cannot defy physics mah.

on and off I use live sentry to check where I parked my car too  and being able not to rely on my hotspot also la.