Do a cold start and see if you can hear any knocking. I would say there isn’t any.
What I think you might be hearing is actually pre-detonation. This can be due to lowered compression, poor timing, worn plugs, oil mist (from blow by pressurising the crank case), worn rings.
If you do hear constant knocking at cold start up, even after oil pressure is built up, you’ve got rod knock. Unlikely in these engines unless constantly over-revved, and/or starved of oil.
Cheers
Bennie