Shopify + Klaviyo merchants: can you identify recoverable one-time buyers without manual analysis?

I'm trying to understand where Klaviyo ends and manual analysis begins.

If a Shopify store wants to separate one-time buyers who are still realistically recoverable from customers who were probably one-and-done, can you make that decision reliably inside Klaviyo?

Or do you still need to combine product type, normal reorder timing, site behavior and customer history manually?

Especially interested in firsthand experience from merchants or in-house retention operators.