Still cherrypicking I see. Doctrine means any and all of the above.The teachings of Jesus are not a doctrine because Jesus was not a religion or a political party.
Doctrine meaning
Doctrine is defined as a principle or group of principles which are taught by a religion or political party.
An example of doctrine is the teaching of the Ten Commandments in Christianity.
Something taught; a teaching.
A widely accepted legal tenet.
A rule or principle of law, especially when established by precedent.
A principle or body of principles presented for acceptance or belief, as by a religious, political, scientific, or philosophic group; dogma.
Something taught; teachings.
A statement of official government policy, especially in foreign affairs and military strategy.
The definition of doctrine is an official statement of policy about how two countries interact.
An example of doctrine is the Truman Doctrine, that said the US would work to contain the Soviet Union.
A rule, theory, or principle of law.
An official statement of a nation's policy, esp. toward other nations.
The Monroe Doctrine.A belief or tenet, especially about philosophical or theological matters.
The body of teachings of a religion, or a religious leader, organization, group or text.
The incarnation is a basic doctrine of classical Christianity.Something taught as the principles or creed of a religion, political party, etc.; tenet or tenets; belief; dogma.
The four noble truths summarise the main doctrines of Buddhism.
Doctrine Meaning | Best 13 Definitions of Doctrine
Pay particular attention to this definition you just provided;
The body of teachings of a religion, or a religious leader
Here is another one you just provided;
A belief or tenet, especially about philosophical or theological matters.
Again you can't say it fits one definition of doctrine but not the others so the others are wrong.
All the above are correct definitions of doctrine.
In my opinion.