Product Marketing Interviews

I usually come across an interview round wherein I am handed the task of preparing a mock GTM plan for a product. I find it pretty vague as expectations vary widely and I am usually confused about what all to include and how to represent. Is there any example?
6 answers
Writing samples? Case studies?
9 answers
4 answers
Which materials/key points/key themes you work on for them to know how to show your tool is better that the competitors'?
2 answers
12 answers
5 answers
1 answer
6 answers
19 answers
Also, how to actually show its success, as this is something that may take awhile before seeing a growth trend and can you directly actually attribute a particular success metric on messaging?
8 answers