Hi @Daniele
Last year when i was working with elementor there was a plugin for making form named metform
They have very nice idea to Make form and setting up fields and making most complex layouts easily
So much flexibility… Please check this link and watch the video too, also wptut make a video check this too
At the moment , i have to just searching alot for each field, so much scrolling in a narrow place to work with proform but if you get inspired by metform…
It will make the proform the best form builder (because you just grow it so fast and great)