How would MAIN, SCHD and SCHG fair in a portfolio.

How would MAIN, SCHD and SCHG fair in a portfolio. Like the title says, how would these fair in a portfolio? I made a post earlier and everyone was talking about using Roth. This is just a mock up scenario for people who have these or have info but how would Main and SCHG be in Roth and schd be in brokerage work out? From what I understand schd’s dividends are mainly qualified and would be no point in a Roth. What ratio would be wise for these three? What are the pros and cons of said investments? I know only one of these is really for growth but I believe in main and schd would be beneficial in the long run. Just want to hear opinions and not afraid of changing position.