Shadowless cards

I wanna ask, if somebody can explain me following.

For example Gastly or Haunter BaseSet was released as:
1st EDITION
unlimited
SHADOWLESS
SHADOWLESS 1st EDITION
?

What of these options are right? (unlimited is sure thing) Someone told me, that these BaseSet cards cant be SHADOWLESS only → that every shadowless card must be 1st edition stamped at the same time (if not, that its a fake).

Im confused, cause I have in my album shadowless Haunter BS without 1stED and it looks like an original card. Help me out please.

Thanks!

I want every version of ENG cards…so I have dilemma now :stuck_out_tongue:
Its in this order from rarest to most common (or most expensive to cheapest)?:
1st EDITION SHADOWLESS
SHADOWLESS
unlimited 1999
unlimited 1999-2000
?

Cause what I have since I started with BS is Gastly 1999 and Haunter 1999…there is no 4th print run in my album :slightly_frowning_face:

Do you know about next cards/sets (Gastly/Haunter/Gengar only) where is something like we are talking about? (I know about Gastly FRLG common/uncommon version only)