Visa Documentation to support 'Intent to Return Home' as a retired person

I am considering whether there is any paperwork I should be collecting for future tourist visa applications.

I am a British Citizen, US Permanent Resident, and my recent travel outside the US and EU has been group tours and cruises. I have been treated as having low risk of overstay etc. However, bureaucracy happens, and I want to be prepared.

The potential problem is that I am retired. No job, no school. A lot of visa granting seems to depend on jobs to prove monthly income and intent to return home.

I transfer a fixed allowance from an investment account to my checking account each month, and treat that as though it were my income. The investment account can go up and down in value quite dramatically over periods of months, because it contains stocks and bonds as well as cash equivalents.

I have no family in the US. I do have a house I like, and consider my home.

Is there any paperwork should I be collecting to maximize my chances of getting any tourist visas I might want in the future? Possible non-EU countries include Russia, Mongolia, and several countries in sub-Saharan Africa. EU may become an issue, depending on the terms of the Brexit divorce.

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I agree with the comments that I am likely to get most visas with no problem. That has been my practical experience. The question is what I should do to guard against exceptions, such as an excessively bureaucratic process requiring me to prove intent to return home.