Not sure the best way to construct post-purchase flow for specific items (in a specific category)

Hi folks,

So my client has some free product samples. There are 4 different sample items, and I’d like to be able to send post-purchase follow ups in the following conditions:

• Someone purchases 1x Sample A, with or without additional (non-free sample) items
• Someone purchases 1 x Sample B, with or without additional (non-free sample) items
• Someone purchases 1 x Sample C, with or without additional (non-free sample) items
• Someone purchases 1 x Sample D, with or without additional (non-free sample) items

I have a separate flow that sends a generic PP email to anyone who orders a sample, regardless of type or quantity, but I’d like to get more granular. It seems like the display conditions are suited to profile properties, and I can’t quite figure out if I can do this with a trigger split, or whether it should be a separate flow for each sample item.

My first thought was to use a trigger split like below, but I’m not sure if that will work if there are other items in the order besides the sample.

I’d appreciate any input, thanks!