Robot txt file best practices

[nickwhawkr4637]

Hello, there is a lot of different info out there on what this should be for magento 2. I found these two that seem to be the most 'common'. 

https://www.linkedin.com/pulse/best-practices-magento-2x-robotstxt-thanh-vu-phi/

https://www.simicart.com/blog/magento-2-robots-txt/

Do these look accurate or is there any info you could share on what this should be for our store? I read the dev docs and they are pretty vague (which I know is intentional) and we do have the defaults set.

Would anyone care to share what the robot txt file should be for magento 2?