Is This an Indicator of Detonation?

The top mark is top ring. 2nd mark is the 2nd ring, which is an oil scraper do the witness Mark will be different.
That’s a lot of oil for a fresh engine. Pattern on the valve tips is not detonation but does show issues with the geometry.
Bushing should be able to be removed - if you have to take off the oil pump and go up the drive hole...