If you want to know which documents and records are mandatory, according to ISO 9001:2015, perhaps this article is a god starting point - List of mandatory documents required by ISO 9001:2015 - https://advisera.com/9001academy/knowledgebase/list-of-mandatory-documents-required-by-iso-90012015/ - you can see that ISO 9001:2015 has no mandatory procedures. Concerning mandatory documents, the list is very small (the scope, the quality policy and the quality objectives). All the rest is up to each organization. Please consider that the list of mandatory records is larger.
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