3 practical ways to get same result.
(1) Using Instrument rack
Easiest method. One midi clip to play all insts. Least FX needed.
(2) Using Group Track
Second easiest. Need to duplicate midi clips for other 2 tracks. Least FX needed.
(3) Using 3 tracks
Need to duplicate midi clips and FX for other 2 tracks.
*(4) Route MIDI from one track to 3 instrument tracks.
You can't freeze easily so no one will use this.
1 and 2 options aren't delay compensated.

1st waveform (Expected result) is without latency plugin . 2nd is option (1), 3rd is (2), 4th is (3).
Tempo-synced FX is supposed to do ducking first beat, so waveform amplitude should look like first one..
It seems that we should just stick to method (3) to get best result whenever we use Live.