The formula of spending significantly less than your income so that you can save and invest it to eventually become financially independent (joining the capitalist class and having the ability to retire or accept involuntary retirement from the labor force) is not unique to any particular author or speaker. Besides Ramsey, other variants include The Millionaire Next Door and the FIRE (financially independent retire early) movement.
But perhaps some people who need to figure this out may find that specific authors and speakers are easier for them to follow than others. One would hope that they figure this out before they are in the “$250k income, kid going to college, no financial aid, but can only contribute $5k” situation.