There are a/b trusts, family partnerships, life insurance, etc.
As a CPA who also has the PFS designation for financial planning I suggest you speak to a financial planner, tax accountant, and estate attorney. This team will MORE than pay for itself in terms of tax savings, financial security, and peace of mind.
You need 'financial checkup" and this is not the place to do it. My job here is to get you started down the right road.
Hopefully, in your case, with these assets, you are on the way.
If this does not answer your question please let me know. Also let me know if you have additional questions.
This is my full time job and I only get paid if you accept my answer. We work on the trust system at JA.
If you understand my answer and have no more questions, please accept and please eave positive feedback (if so inclined). Thank you.