Hello @Glen White,
Great question and I love the strategy!
Klaviyo built signup forms are designated to allow customers to only be added to one list per submission and not to be added to multiple different lists. However, if you want to allow customers to choose which list they are added to, I elaborated on this strategy in the following Community post where this takes advantages of multiple buttons within a signup form.
Alternatively, another solution would be creating a signup form with a multi-checkbox field asking what sort of information your subscribers would like to receive. Each of these options in the multi-checkbox can then be used to tag your subscribers with a specific profile property. You can then use segmentation to capture these customers who are on this particular list your signup form is submitting to and have this specific profile property. This in a sense would offer you groupings of customers who are interested in receiving different content which you can remarket towards and run promotion or events using campaigns or flows.
For example, if your signup form had a multi-checkbox selection of “Board Games” passing a profile property of “interest Category” and a profile value of “Board Games”, you can create a segment with the rules “Properties about someone, Interest Category Equals Board Games”. This segment would then capture all users who have this specific profile property and value. Resources that may help you further understand this are the following articles:
I hope this helps!
David