Dear Sir,
Your already half way through, you can filter these employee skills that you have collected from the data and come up with a list of core skills or competencies and present it to the management obtain approvals for it, you might find that the following competencies/ skills are required to be available in all the employees
•Time Management
•Self development
•Communication skills
•Self motivation
•Transparency
•Problem solving
•Team Working
•Commitment
•Cooperation
•Confidentiality
•Efficiency
The level of these skills vary from one position to another and you need to group them i.e. administrative, technical, managerial, soft skills
You also have competencies which are job related that means each job has its own set of skills required for its performance in addition to the core competence agreed by the management.
On the other hand do search this cite on materials regarding skills and competence.
Do refer to this cite which I find very inspiring on how to group your competencies
www.ida.gov.uk/upload/pdf/item
If you wish send me your raw data and I would be more than glad to help on it
Regards