Tiller https://tiller.com/ is a good Plaid "proxy". It'll write data to a Google Sheets and can maneuver from there.

There’s also this: https://beta-bridge.simplefin.org/. Very reasonably priced and it works great. Actual Budget uses it.

I think it's rather hard because of their security & contractual requirements -- we had to sign a contract with them, go through security review, and so on.

I reached out to them a couple years ago with this exact question and was told flat-out no. You might be able to sneak around it with an LLC but I think they also require you to have a public website for a plausibly banking-related business, which altogether seemed like too much effort to fake for what I wanted out of it.

https://www.yodlee.com/ is another provider