This deliverable reports initial steps towards a catalogue of Minimum Viable Skillset (MVS) Profiles. These describe key skills and competences for roles that enable researchers, professionals, and stakeholders to practice Open Science (OS) with the support of the European Open Science Cloud (EOSC). MVS Profiles draw on available skills resources, including competence frameworks, and are proposed as an aid to developing skills through curricula and course design. Each MVS Profile relates the essential skills to the Open Science (OS) practices, activities, and outcomes that may typically be expected of the role concerned. The Annex to D2.1 offers examples of Minimum Viable Skillset (MVS) Profiles, and provides an example demonstrating how these MVS may be annotated and summarised using Open Science Skills Terms based on available terminologies. Each MVS describes key skills and competences for a role involved in practising Open Science (OS) with the support of the EOSC. MVS Profiles are synthesised from established competences frameworks and resources. They are proposed as an aid to skills development, especially curriculum and course design. Each MVS Profile relates a skillset to the Open Science (OS) practices, activities, and outcomes that may typically be expected of the role concerned. The methodology is further described in the main D2.1 report.