Is there an accepted or commonly applied UX practitioner’s code of conduct/ethics guide?

Often in our line of work we are asked to do things that do not serve the user's benefit and are not in line with UX design best practices, but is there a specific line that we should not cross as UX professionals, or something that we can show our employers regarding the standards and professional guidelines that we should abide by?

Also, in addressing this question, I think it would be invaluable to tease out the aspects of any references that are specific to the area of UX design, even if it is combining several areas that are relevant to the discipline (e.g. pyschology, engineering, marketing).

Some examples of guidelines that cover particular aspects of UX design that I have seen include:

UPDATE: This is one of the articles that I have read which talks about breaking down specific components/aspects of design that can be used to assess or think about UX design (see image below).

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