I get the sense you are not telling us the whole story.
If you live in a tax haven, there are no taxes, so foundation, company, or llc, makes no difference, you pay no tax. If they don't think it is a real business, changes nothing, still no taxes. So you don't have to care what they think.
You said it doesn't matter where you live, but actually it does, it is the most important thing, because how can we recommend you︀ a solution if we don't know the tax laws of where you are? If you︁ are in USA= country with world wide tax, your foundation will not conceal your income.︂ If you are in a country with territorial tax,its different.
Your comment is the equivalent︃ of someone saying, I want you to solve my problem, but I'm not going to︄ fully tell you what the problem is. The best case scenario is you get useless︅ advice and the most likely scenario is you get bad advice that hurts you because︆ you gave a part problem, you get a partial solution.
1. How long have you︇ been in Monaco
2. Where are you a citizen of originally (this affects your tax︈ rates and the solution I can recommend for you)
3. What is your specific problem.︉
How can we tell you what to do to solve your problem, when you have︊ not really told us, except a vague tax issue. Is it your original nation claiming︋ you owe them tax, do they reject your Monaco residency, do they reject your Seychelles︌ expenses?