Visa application: relatives up to which degree?

I have far away relatives like third or fourth degree living and partially born in the US. There is no contact, I don't know all full names, birthdays, and definitely no contact details

When entering relatives to my visa qpplication, do I need to mention them or is first and second degree enough, for example, grandmother?

L1B is my target visa.

Thanks for any advise or experience!! :)

submitted by /u/limited_moc
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source https://www.reddit.com/r/immigration/comments/ob46l5/visa_application_relatives_up_to_which_degree/