Attribution is at the account level so available (and consistent) for all campaign types. The right answer is subjective. Do you want to know (and have smart bidding optimize for) the influencers (first/middle) touch or the last thing that got them over the line? Depends on your goals, whether you’re relying on it to tell you how many leads came in for a client on a given day, etc. I’d choose what helps you best optimize to your goals in google ads and then do attribution model comparisons in google analytics to better understand the how the attributed credit changes when you swap models.