In email the Received: header can legitimately occur more than once with mutually exclusive values...
Received: three.example.com
Received: two.example.com
Received: one.example.com
Are there any other headers can occur in email headers multiple times legitimately?
Ya there are other headers that can appear more than once and is clearly explained here in RFC 5322
Headers that can appear more than once
Check the link above for more clarity.