I get a very occasional VERY ENTHUSIASTIC Jeep wave. More like a "HOLY $#!+ A Wagoneer!!!" (even though I don't have a Wagoneer). I get more from CJs, YJs, and XJs then I do TJ, JK, JL, or JT.
Jeep wave etiquette is the newer Jeep waves first. Most open top Jeepers will say the Jeep wave is more for open top Jeeps and excludes XJ, non JK/JL/JT Fiat Jeeps (Renegades, Compasses, etc.). I don't think there is a general consensus on Jeeps like FSJs or the old school Commandos.
79 Cherokee Chief (passed CA smog check Sept 2020)
(Cherokee Build Thread)
11 Nissan Pathfinder Silver Edition 4x4
09 Mazdaspeed3 Grand Touring