Depends on the purpose of the website. If the purpose is to convey information, then there will be quite some similarities between websites that share that purpose.
If the purpose is to use the web as a medium of artistic expression, then you can see some variety. But that's likely a small percentage of websites by purpose.
If the purpose is to use the web as a medium of artistic expression, then you can see some variety. But that's likely a small percentage of websites by purpose.