The issue here is that HikVision is a Chinese company, and they have been widely known to supply equipment to the government to aid in the suppression of the Uighur people. Same with Dahua.

The next problem is that both these companies operate under a very wide array of brands, hundreds if not thousands of names, some of which you might recognize and may have thought that they were separate. Lorex is one such brand. Many more can be found at https://securitycamcenter.com/hikvision-oem-list/ and https://securitycamcenter.com/dahua-oem-list/ among others.

Next, you have the other companies like Wyze that take Dahua hardware and put their own firmware on it.

So, if you want to use hardware from a company that is not compromised like HikVision or Dahua, the options get much more limited. At that point, you might want to start looking at building your own on top of the Raspberry Pi plus their camera options.

Personally, I'm still looking for someone who has decided to commercialize cameras based on the Raspberry Pi, so that I can buy a whole stack of them at once and I don't have to build them all myself.