I have vote on this in the following manner.
1) Extraterrestrial Travelers yes
2) Interdimensional Travelers yes
3) Time Travelers yes
As I believe you cannot support items 1 thru 3 without having all 3 items involved.
As for the last 2 listed on the poll.......I...
The whole thing is fiction. Nice try but way to many unanswered questions with volumes of open loop. You cannot obtain the types of information proported without a specific level of clearance. That level is above TS and SI.
For example: the indivual who claims to have "looked through...