Last month a Repeat Customer Insights customer was asking about who their top 40 active customers were based on total spend.
Both of those segments can be found in the RFM analysis. Active would use the Recency portion and spending would use the Monetary.
These customers would be highlighted by a high Recency and high Monetary score. I'd recommend the 4th and 5th scores in each and maybe the 3rd depending on how large of a segment you need. The more scores you include, the larger the segment size.
You can also use the Recency-Monetary Grid and the two segments that are close to those scores: Recent high spender (RM) and Recent whale (RM). That'll include more people but they'll have similar behavior.
Repeat Customer Insights comes with a 14-day free trial so you can see what these segments would look like in your own Shopify store.
Eric Davis
Retain the best customers and leave the worst for your competitors to steal
If you're having problems with customers not coming back or defecting to competitors, Repeat Customer Insights might help uncover why that's happening.
Using its analyses you can figure out how to better target the good customers and let the bad ones go elsewhere.