Winters case study $1.$ Compare a first click vs last click attribution model

$2$a$.$ Do new customers convert faster or slower than the old customers?

$2$b$.$ Do new customers spend more or less than old customers?

$3.$ What are top revenue ORIGINATOR channels? Does the avg amount differs a lot by channel user chooses to investigate about the product?

$4.$ How are the channel touchpoints distributed by positionname? $($Mostly Originators, Mostly Rosters, Mostly Converters etc$)$