The first line in the quoted info from the some immigration website states this. "The alien husband must have no less than ฿400,000 in a bank account"
That seems to be fairly clear that the funds must be in the husband name only.
Same for the income option. If not legally working here and paying taxes you must show monthly transfers from abroad since the US embassy has not done a proof of income document since December of 2019.
This from a immigration order issued in December of 2018 allowing for monthly transfers.