I likely do not remember correctly, but think in 1970ies becoming aware of F1 and Autoracing we had
That was the progression ladder with F2 sort of being bypassed more and more, with drivers going straight from F3 to F1. I am perfectly fine with an aligned ladder, they can call the classes what ever they want, that they have gone back to the traditional class names after various other (stupid) ones is good.
The only problem I have is the spec cars, lay down the rules and let any manufacturer or garage tinkerer build cars according to them. While following the sport I have seen
Van Diemen, Lola, Reynard, Quest, Swift, Vector, Mygale, Ray winning championships in Formula Ford
March, Ralt, Reynard, Dallara, Lola, Anson, Martini, Mygale winning championships in F3
March, Toleman, Ralt, winning championships in F2
Give me constructor diversity and a smaller ladder works with me.