Since most prefab house manufacturers today offer custom-designed houses, it doesn’t really matter how the show homes look. They try to appeal to the masses with the show homes because some visitors think that if a manufacturer, for example, has a flat-roof house in the exhibition, they only build flat-roof houses.... (which is why there are never bungalows there, since the market share is too low and the prefab house providers fear that the majority of customers might think they only build bungalows....). In short, how the architecture of the houses in the show home park is can be relatively unimportant to you. Even if a provider presents itself with a red Swedish cottage and you want a modern urban villa, you can still be a match.
Much more important are the details that you don’t immediately pay attention to at the beginning. First and foremost among them is certainly the wall construction. There are big differences here: vapor open or not, which materials are used for insulation, on the inside with drywall or Fermacell (mounting brackets? soundproofing?). What kind of building technology is used for heating, residential ventilation, etc.? Is the screed floating or dry? Then, of course, it is important to study the construction service descriptions very carefully: which qualities are included as standard, how does it look with healthy living materials and: what is not mentioned??? For example, site setup, toilet, waste disposal, earthworks, etc. You will also find that some providers have a horrendous bad reputation and it is better to keep a wide berth from them.
In short: The show homes in the park are nice to look at, but usually contain a lot of optional extras that have additional costs just like in a car dealership (so not what you get as standard according to the construction service description), but in the end the show homes are not really the benchmark. Rather, collect the construction service descriptions and try to form a judgment with the help of the forum or a building expert. Because, as said at the beginning, most manufacturers can offer you any conceivable house in terms of architecture and interior design; the difference lies in execution and the price-performance ratio.
One more tip: The providers are only really interested in you when you tell them that you already have a plot of land ;-) Otherwise, they tend to think you are Sunday strollers or people who want to get ideas for renovation/interior decoration, etc....