If I remember correctly the TPM VCD was an official release - as to the rest of your questions, the below info may be of some help…
Nathan Butler runs a youtube channel comprehensively covering many of the popular and also rare releases for Star Wars down the years.
It can be found here - https://www.youtube.com/user/ChronoRadio/videos
If you can type ‘The Phantom Menace VCD’ into the search bar on it… these videos will appear:-
https://www.youtube.com/user/ChronoRadio/search?query=The+Phantom+Menace+VCD
There is also some basic information that can be found for the VCD release, here:-
http://www.45worlds.com/dvd/disc/4717415111646
For info on the Star Wars releases in general (especially older releases) these are also insightful and informative sites:-
• Video Collector’s superb & informative ‘Star Wars on Video’ resource website (with images and info)
• projectcclarke’s quality & insightful ‘Star Wars On Home Video Reference Site’ (with images and info)
• DavisDVD•com’s Information Pages on OT VHS & DVD releases (from 1982 to 2004) - SW : ESB : ROTJ : Misc (may have mentions of the VCDs?)