Ideas and arrangements for adding new legal/financial stakeholders on shared property?

Interested in hearing thoughts and experiences from anyone who has looked into transitioning from 'sole proprietor' or 'landlord' status towards a cooperatively held & run land project with multiple stakeholder-tenants!

I know quite a bit about different structures of intentional community formation with an established or committed group, however this question is more aimed at the uncertain prospect or trial of onboarding one or a few new long term stakeholders into an existing owner-operated permaculture property. The process may aim for one of those proven co-owned community models eventually, or something new/different. It's somewhat unpredictable, and therefore needs some flexibility and safeguards to allow things to unfold and formulate an amenable structure over a reasonable timeline, without anyone taking undue risks or burdens.

It's a pretty complex and consequential process, but maybe there are some sensible steps and models to work with? For example, I think figuring out a way to enter a mutually beneficial short term trial phase that still involves some meaningful financial and other commitments, but is also easily terminated by either party if things don't click. That could look like say a one year personal loan as a tentative down payment on buy-in. Or a package of infrastructure improvements/additions by and for the newcomer, which are in large part moveable (i.e. tiny house on wheels) and could be extracted.

I've been turning this puzzle over in my mind and welcome additional perspective and anecdotes! I'll elaborate a bit more as I go or find some reference points, but wanted to open this up here in case it resonates. I think my eventual aim would be something like a co-homestead model similar to co-housing or community land trust, with some shared amenities and essential co-op governance, but privately held improvements and some personal live/work/steward space. That would require a threshold number of participants to work out, through some kind of incremental process and refinement over likely several years of this transitional phase. Seem reasonable?!