You really need to check each college for their policies. The fact is your family income is more because you are now remarried. You are implying that you should get more need based aid than other families with the same household income. That doesn’t make sense either.
Some colleges (that use the non-custodial parent Profile) do in fact use only the bio parents in the calculations. Some do this only if the bio parents have not remarried. Some count everyone. You need to check.
As noted above, the household incomes for both you and your spouse, and your former spouse and new spouse, are higher than they would be if you all had not married.
Colleges use “family income” and once you have married, the new spouse is a member of your family.