After reading Steven Bavaria and Steve Selengut's (as well as all kinds of investing) books and learning about options in general I have formed my own "style" of income investing that seems to be serving me well. I'm 40 years old, still working, but my taxable brokerage more or less produces enough to cover our expenses, so my W2 income just gets invested back into the portfolio. Without the insurance question with 3 dependent children, I'd probably be "work optional."
In the taxable, we are are 10% GOF, 10% PDI, 10% TSPY, 10% TDAQ, 4% MLPI, 3% JRI, 3% BRW, 3% WDI, 3% BXSL, 3% MAIN, 3% FSSL, 4% various CLO Equities (OXLC, etc). The final quarter of the taxable portfolio is committed to dividend stocks that I use an options wheel strategy with. This is much more lucrative than the income funds, but more work. Results tend to slightly outperform the SP500 on a monthly basis with smaller drawdowns and blunted upswings. In a more sideways market, I tend to think this set up will outperform. In any case, the portfolio is meant to be an income engine, so I don't stress too much.
The retirement accounts are a mix of index funds (what's available from my employer's 403b), but our Roth IRA's are mostly GOF, PDI, OVL, OVF, OVS on DRIP as well as CTA, IAUI, and KSLV.