Do addon authors get all white or black list of aura ID by themselves (in person)?

[Layback_]

For some raid frame addons, they tend to display buff or debuff icons on top of each unitframe especially on boss encounters.

Such as:

．Echoing Anguish
．Felclaws

And when I dig into their codes, I see a list of table that is filled with dozens of aura IDs.

Of course, some would just let users to build their own list tho

So, as in the preceding case, do authors collect themselves a list of auras (one by one) in person? or would there be any well organized list available?