That’s what I mean by accounting for coasting and near coasting. That power distribution that you are seeing is very normal for a group ride. I’ve never not had one that didn’t look like that.
Terms like “pyramidal”, “polarized”, and “threshold” are not intended for a single ride (this is where intervals.icu, which I love, really has it wrong). They should just take that label off for the individual ride. It’s misleading and not useful.