What you are describing is a recipe for day trading. I think the OP is asking for a is passive investment strategy that averages 1% gain per month.
I was thinking about cumulative non-redeemable preferred shares actually - they sit just above the junior in a waterfall.
https://www.globalxetfs.com/content/files/Global-X-Covered-Call-ETF-Tax-Primer.pdf In 2019, for example, the Global X Nasdaq 100 Covered Call ETF (QYLD) made total distributions of $2.322700 per share. Of these distributions, $1.977693, or 85%, was treated as ordinary dividends/short term capital gains. $0.064376 (3%) was treated as long term capital gains. Last, $0.280631 (12%) was treated as return of capital