@Vlad you should propably have given each sketchs names or posted screenshots bellow the link. i opened all 6 of them at once which makes them apear in different order. so i was about to vote for the completly wrong ones
I think for me, as said earlier it depends on if theese design are also considered to be for a color/merge with website mode.
For a normal compact tab mode without color and merge i think 5 is the best, as it follows the logic of normal none compact the most
For a color mode with website merge i think 1 is the best and most in line with MacOs in other places
with 2 and 3 being my least favorite for any mode as they kinda make it seems like its safari where they are also adress bars