List of prefabricated house companies providers

I just briefly dropped out due to professional ignorance. [...] Is my layman's assumption correct?

Professional ignorance and accordingly often imprecise or even incorrect statements are allowed for laypeople. However, the proportion of these assumptions should gradually decrease during the course of the discussion with professionals. And that should actually also apply to accepting manufacturers' misnomers of the wood frame panel as wood "stud" construction or the marketing misequation of stone and "solid".

But slowly I’m wondering what advantages and disadvantages can still argue for the individual construction methods.

My professional understanding (in which I am in my forty-second year) lets me both 1. recognize that the construction methods cannot be divided into "good" and "bad" and 2. be unable to predict with certainty in about twenty percent of cases from which construction method camp the most favorable offer will come. Therefore, for my own construction project, I would always make a decision during the resting phase of the dough.

To me as a layman it seems: if I build rather "simply," meaning no/almost no slope and no particularly unusual floor plans, wood stud is better. If it gets very special (and actually only then), rather solid.

At least for the affected storey, wooden construction is usually ruled out when in contact with the ground (exception: dam carpenters). Also, for "unusual floor plans," there is no predesignated winner among the construction methods. What is better done in wood are cantilevers and recesses, corner windows, and the like. Mazes should generally be avoided.

And it’s no use if the OP hires an architect from the budget segment but expects high quality.

There is neither a budget segment among architects nor specific architects for houses whose manufacturers belong to or want to be seen in the budget segment. What the OP is considering is planning with architects with customer-friendly fee structures, whom I certainly would have warned if I considered them bad.