Don't really know what I'm looking at, but many years ago a tech showed me a pattern on my 4-cyl VW engine that looked much like that...said the other spikes were the result of excessive resistance from bad plug wires...

...am I close?

__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car