D2 v8 misfire

Car is a 2002 52 reg 4l v8

Getting multiple misfire code on diagnostic along with misfire on cylinders 2,6 and 8. Have replaced lambda sensors and compression tested bank 2 with following results

2 -175psi
4 - 165psi
6 - 150psi
8 - 150psi
No other fault codes.

Looking for suggestions on what could be wrong with it. Especially as 1 cylinder still seems to be firing! Plugs and coil packs are less than 2 years old and have less than 10k miles on them.

Has this misfire happened all of a sudden?
You can swap leads from side to side at the igniter packs or swap spark plugs to see if the misfire swaps to the odd cylinders or stays the same.