>>32133732strongest is subjective. I'm of the opinion that decidueye is actually not the best plumelock support, Lurantis didn't get as many top 8 spots but had far more top 32 spots across all events since SM. Being able to run a much thinner pokemon line combined with the ease that Lurantis sets itself up allows you to outlast the enemy.
The tier list in the pastebin is kind of accurate except the plume lock archetypes are probably tier 1/2 now instead of 2/3 as people have refined their lists. This is my current favorite expanded list atm. I can turn 1 item lock almost every game with this list with battle compressor/revitalizer/extra shaymemes to search vileplume pieces. 4 AZ lets you recover your injured Lurantises, with FOGP you can play them the same turn then use flower supply to pull the discarded energies back on to an active Lurantis. If I were to go to an event I would absolutely bring this deck.
My WR when moving first is 85% in the past 50 games. Moving second is a little sketchier but still over 60%.
Another good deck atm is Raikou/Eels but that deck gets a LOT better in May since it'll gain even more beef with aether paradise, Koko as a way to deal with mega mewtwo and field blower to deal with garb cancer.