Well, first there's the FATHOM E - their hard-tail MTB. I didn't really know about this model when I was ready to buy, but probably would have suited me better - I might have gotten by with one bike instead of two. It's a much more aggressive Explore, and has the bigger 500w pack but the 'sport' motor like the Explore.
Stance - Giant's budget eMTB, also offered as a 29'r. Smallish forks, basic gears and brakes, it's an affordable entry-level bike. In my mind it is more youth-focused. For less aggressive trails, or to use as a hybrid road/dirt bike, it might work out nicely. The price is right on them. The 'Power' version is the 27.5 size with the sport motor, and the Stance-Pro has the 29" wheels and 'Pro' motor. Both have the 500w pack.
Trance - With two levels of performance (no SX +0 Pro this year), this is their mainstay mountain bike, focused on trail riding. For 2020 in the US they have their E+1 Pro, the flagship, and the E+3 Pro, their more entry-level offering. I would say the E=3 is very much on par with the base turbo levo, similarly priced, but has 27.5 wheelsets compared to the Levo's 29's. The +1 has higher level component spec, nicer suspension and brakes, gears, etc, more on par with the levo comp, but there is no 700w pack (yet).
As I keep saying, it's time for Giant/Yamaha to offer a 700w pack before they simply get left behind. I guess their 'range extender' pack is their answer to this.
Reign - Giant's new downhill oriented 'enduro' bike. It is really raked out for hardcore downhill, 170mm forks, a carbon fiber frame offering. And this model now supports the new 'Range Extender' 250w piggyback battery pack for 750w of pack. This one more compares to the Kenevo, IIRC.
The Reign E+2 Pro might be a great option for you due to the extended pack and range. MSRP for US is $5500.
@PDoz, or other owners of one, may have more familiarity with this model, or tried it, have seen it in action. One of my local dealers that had one to look at ( I did not ride one) told me it would feel the most like a dirtbike to me out of all of them due to it's raked out geometry, long wheelbase, long travel suspension. I gravitated toward the Trance simply for being a little sportier as an all-arounder, trail bike, good at climbing as well as downhill.
I would have to sit down and study all the specs for all of the bikes to expound further on their differences. What is really great about the Giant lineup is the broad range of offerings - something for everyone. And then the whole LIV line for the ladies as well. Oh, and the Yamaha SyncDrive is just the best.