Hi, Jamie and welcome to permies!
I have both a row of brambles and individual clumps of raspberries spotted in near some of my fruit trees and they all do well. In our hot summer climate the raspberries appreciate some shade. We have a lot of wild blackberries that have various diseases so I've avoided planting any other varieties of blackberry.
I think how you choose to plant will depend on your areas climate and how large an area you have available.
...others here can answer with more experience using plant guilds than me, though

good luck!
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