How important is each EU institution as an addressee of interest groups demands and policy influence?

Here is a list of required readings for my essay topic. There are many references, all of them don\’t have to be used (they are to give you an idea what I was suppose to base my writing on). I would prefer the references and writings to be based more or less on these readings to make the essay content as relevant to the module as possible:

Institutional Actors: EU Parliament, EU Commission, The Council of the European Union
Required readings:
Lelieveldt, H. and Princen, S. (2015) The institutional framework, in The Politics of the European Union. Cambridge University Press pp. 27-46.
Thomson, R. (2015) The distribution of power among the institutions in J. Richardson and S. Mazey (eds.). European Union: Power and Policy-Making. Routledge. pp. 189-210.
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Schmidt, S.K. (2015) The shadow of case law. The Court of Justice of the European Union and the policy process. in J. Richardson and S. Mazey (eds.). European Union: Power and Policy- Making. Routledge. pp. 159-188.
Rittberger, B. and Wonka, A. (2015) EU Agencies, in J. Richardson and S. Mazey (eds.). European Union: Power and Policy-Making. Routledge. pp. 233-258.

Lobbying and Interest Groups:
Required readings:
Eising, R. (2016) Interest Groups and the European Union. in Cini, M. and Perez-Solorzano Borragan, N. (eds.) European Union Politics. Oxford University Press. pp. 179-194.
Bunea, A. (2016) Designing stakeholder consultations: reinforcing or alleviating bias in the European Union system of governance? European Journal of Political Research (Available online: doi: 10.1111/1475-6765.12165)
Beyers J. (2004) Voice and Access. Political Practices of European Interest Associations. European Union Politics 5(2): 211-240.
Du?r A, Bernhagen P, Marshall D. (2015) Interest Groups Success in the European Union: When (and Why) Does Business Lose? Comparative Political Studies 48(8): 951-983.

Understanding EU Policymaking:
Required readings:
Young A.R. (2015) The European Policy Process in Comparative Perspective. in Wallace et al. (eds) Policy-making in the European Union. Oxford University Press. pp. 46-71.
Wallace, H. and Reh, C. (2015) An Institutional Anatomy and Five Policy Modes. in Wallace et al. (eds) Policy-making in the European Union. Oxford University Press. pp. 97-111.
Thatcher, M. (2015) European regulation in J. Richardson and S. Mazey (eds.) European Union: Power and Policy-Making. Routledge. pp. 307-326.
Knill, C. (2015) Implementation in J. Richardson and S. Mazey (eds.) European Union: Power and Policy-Making. Routledge. pp. 371-396.

The purpose of the essay is to show my understanding of the importance of each EU institution and how they are tied to the interests groups and policymaking.