I agree, @jamesisapayne. Only New Zealand's attack comes close in my opinion, but they are missing a top spinner. Australia's attack is just so comprehensive... More about keeping them all fit than anything!
NZ have a decent attack for sure, Trent Boult is a magician and Southee is superb too but I’d take Cummins and Hazelwood over them every day of the week, they’ve got the extra pace to give you the hurry up on a flat surface but also the skills to move it around.
Lockie Ferguson is rapid but looks more of a white ball player to me and has injury issues, I can’t see him staying fit for long enough at one time and Wagner is an effective bowler but seems a bit of a one trick pony, although his tactics seem to be working
You’re dead right about the spinner, I may be well off the mark but it’s probably a result of nz being such a seam friendly country, you only have to look at the amount of green tops they prepare for tests to see how much more they value their seam/swing bowlers