Jakey 97,
I have a 2019 Caldera Red XE R-Sport P300 AWD 30t with Black Pack. This is basically the exact same vehicle you are looking at except for the "Dynamic" which allows your newer model to customize everything. My R-Sport is limited to pre-determined JLR internal performance software, transmission shift points, and suspension settings associated with selecting "Dynamic" and placing shifter in "Sport".
Since you no longer have a choice of a V6 or V8 in the XE, the P300 2.0L engine imho is your best choice. The car handles like a dream and you can punch it in a corner and never feel like you are losing control. The P300 has great acceleration for most folks. Given I'm in my 50s, I no longer feel the need to have 500+HP V8 muscle car that sacrifices comfort for loudness but still wanted a vehicle that flies when I want it to
While I understand the need for many folks to go the Diesel route given the fuel costs etc, choosing a Petrol engine (and in this case the top HP Petrol engine) is still the way to go based on reliability and performance. I do NOT baby my P300 XE and still get 25 MPG no matter how hard I drive it. When on long highway speed journeys, my fuel economy rises to about 34 MPG on average.
I love my Jag-g-g which, again, is basically the exact car you're thinking of buying. It literally puts a smile on my face every time I drive it. From my biased point of view after two years of ownership and 22K miles of driving across the Pond in the Northeast USA, I have no hesitation in recommending you just take the plunge and buy it.
Here at some pics to wet your appetite! Note, I had the "R" Emblem added to the Grill afterwards by the Dealer since the 2019 XE had no grille badging for my model year. I also liked the contrast between my XE and a classic Jag I parked next to at a fair last summer. Enjoy!