Since they probably both count for "old school" geo in the scheme of things it may not be the exact comparison for the OT, but I have been riding my 2019 (old style) Kenevo Large the last few rides, while I am waiting some parts on my Levo SL size XL.
Context : I am a tad under 6'1". My previous bike before these two was a medium Evil Insurgent (which in retrospect was WAYYY small)
Kenevo climbs faster due to the motor and traction of the coil, but the SL gets the nod on switchback even though it's longer and has bigger wheels and longer reach. Kenevo feels like has a steeper STA and more over the cranks pedal position.
On the downs - the Kenevo doesn't like to change direction as easily and is a plow machine through the rough. The smaller/lighter wheels (SC carbon on 2.5s) accelerate out of turns faster, but the SL feels faster overall. SL is miles more nimble, flickable, and poppable -while still being confident at speed. I am close on most of my DH PRs that I can ride right now with the SL.
The SL benefited from an offset bushing to get slacker, pushing the seat fwd in the rails, and progressive linkage from Cascade components. I am still looking at a 160mm fork and more DH oriented rear shock as well as dropping rotating weight on the wheels/cassette/tires. Overall - it's more akin to a trail bike feel that still feels confident on gnarlier the trails I ride. For areas with more XC type terrain (SP - thinking DMM/PQ, Greer, etc) - the SL is way more fun.
I would be curious if they made an Evo SL or Enduro SL to bring the geo up to speed, but I don't feel undergunned at all.