I find it quite amusing the names and effort that folks put into "raised beds". Most of the effort seems to be in aesthetics rather than production.
To no surprise, I'm all about production not aesthetics and I find the best in garden method is still one of the oldest...raised rows.
My ancestors used mules to pull middle busters to build the raised rows and before that they simply used shovels to build them.
In my climate, raised rows are a requirement for production. Already this spring, we have had two 8-inch downpour events lasting a day and a night and another one is predicted starting Monday. Without raised rows any crop planted in flat ground would have been lost.
So, instead of mules and shovels, today we have modern small garden tractors that can build an 85 ft row 10-12 inches high in about 1 minute. Depending on what I'm planting, I make them in double row sizing at about 2 ft in width or otherwise about 1 foot. The ease at which this is accomplished cannot be overstated and the productivity is unequaled by any other means I'm aware of.
The attached photo shows this year's first corn crop, purple hull peas, second corn crop, okra and green beans all thriving in the raised rows.