I am a lawyer, and... Jordan, I like what you've said so far. And you might have a cooperative already!
What makes a business a worker cooperative? 1. The workers own it, 2. the workers control it (1 member = 1 vote), and 3. net income is split based on "patronage," which means the % of the work done by each worker-owner.
This is a bit simplified, there are ways for outside investors to play a role, with limited voting, etc.
So Jordan, if you and your partner have one vote each, and if you split income based on how much of the income each of you generated, then you may very well already have a worker cooperative. In the US, worker co-ops are often structured as LLCs, often because of employment law, and also because cooperative corporation laws were designed for ag and consumer co-ops.