Slow swing speed here, so lots of headcovers:
Driver - 10.5*
5W - 18*
9W - 23*
6H (5i replacement) - 27*
7H (6i replacement) - 30*
The gapping from 5W to 7H is about 10 yards per club, so it works well for me.
My driver is a Titleist 913D3, and beyond that my two longest clubs are the matching 4-wood, 17 degree standard bumped down to 16.25 degrees. And then a 4i.
I used to have the 3-wood in the bag that matches the woods, but the 4-wood has a smaller head which I prefer hitting off the ground. When it's wet/rainy conditions I swap in a hybrid and take out a 64 degree wedge that I carry for firmer conditions. That makes the hybrid the second longest after the 4-wood.