Opinioned Competitve combinations

From what ive been seeing for years, batrep after betrep, im was expirimenting with alot of competitve combinations and want to know if people agreed with these combinations to futher perfect strategy. Now i get that i see topics on these but i really want to see what you guys think amongst the choices i provided with ( some people may not agree with) what people see work and what people didnt see work. Awesome thanks for your comments guys. i appreciate it. Now i also get not everything is on there but these are general ones i see all the time at torunaments and thats when you guys come in and vote which one works best for you to let me know to expiriment a little more with that particular combination. Also i know more than 1 of these is competitve, just for you pick your favorite amongst them.

I'm not entirely sure how I would pick between them, different units fulfilling different roles in different force organisation slots. You see so many of these units appear in the same army in order to reach highly competitive levels. Maybe it might be better to break things down into a role-by-role or different force organisation polls?

Comparing, for example, 3 Ravagers with 5 Wyches in a Venom, is pointless. They are completely different units with different purposes.

I know shoulda put this as a normal question instead lol i know i made my mistakes, if you want want you can reply to 2 or more on the list if you like more than 2 things. Wether its AT or AI or both.