Bottom two are 390 - 427 - 428 from 1966 - 1970. The angled 5/8" nipple would connect to one end of the PCV U - tube.
Top one could have been used on many car lines with many different engines in the same period depending on options. For a big block car it would screw into one of the other two again depending on options.
You can see each of these items at Mansfield Mustang's web site.