I made this updated cheat sheet for the new lineups for the instant elbow smokes, since they were changed with the updates to ancient.
The spawns are listed 1-5, ranging from left to right. 1 is the leftmost spawn, 5 is the rightmost spawn.
To throw these smokes you want to shift walk forward 2 steps, then jumpthrow while walking.
I recommend you practice them in an offline game, to get a feel for how far you need to walk.