I'm not entirely sure I understand you?
Assuming they're from the same year/batch a Cherry MX Red for example will always feel like a Cherry MX Red regardless of what base they're plugged into. The base/panel of keyboards obviously differs in various respects but you're mainly looking at things such as layout (EU, UK, USA etc), elevation, whether or not there's a wrist wrest attached. There's a fair few factors but the feel of the keys will always remain the same as long as they're from the same company and of the same type. As an example, my current keyboard is a Patriot V730 which uses Kailh brown switches -- these are also available from other companies such as Sharkoon on their SGK3 series as well as plenty of others. The switches are physically the same, it's only the enclosure they're sat in which differs.
Most companies use a range of switches, there are some which are technically exclusive but they tend to be in house, Logitech and DAS for example have such switches.