What laws do the Brexiteers want to change?

Actually, most of them do have nice short titles that everyone uses. But, I don't know, you could maybe match the list of UK bills - ie find 21 EU pieces of legislation?

Here are a couple of examples:

The Treaty of Lisbon: Treaty of Lisbon amending the Treaty on European Union and the Treaty establishing the European Community

The InfoSoc Directive: Directive 2001/29/EC of the European Parliament and of the Council of 22 May 2001 on the harmonisation of certain aspects of copyright and related rights in the information society

"An Act to make provision to require Ministers of the Crown and others when making strategic decisions about the exercise of their functions to have regard to the desirability of reducing socio-economic inequalities; to reform and harmonise equality law and restate the greater part of the enactments relating to discrimination and harassment related to certain personal characteristics; to enable certain employers to be required to publish information about the differences in pay between male and female employees; to prohibit victimisation in certain circumstances; to require the exercise of certain functions to be with regard to the need to eliminate discrimination and other prohibited conduct; to enable duties to be imposed in relation to the exercise of public procurement functions; to increase equality of opportunity; to amend the law relating to rights and responsibilities in family relationships; and for connected purposes."

Please cite a source for this claim. Apart from anything else the EC cannot give permission - only the CJEU can say whether a measure a member state has taken is compliant or not.

The point I was making about national security and subsidies to state industries is that national security is not an EU competence. So if you make that claim, and can defend it (as some states have), then there is nothing the EU can do about it.

The "short titles" you offer are the long titles, the short title is just the "Directive 2001/29/EC":

Oh, and BTW, that act combines several earlier pieces of equalities legislation pre-dating EU mandates for such legislation, both primary and secondary, into a single Act.

Competition policy is an EU competence.

All you have pointed out is that national governments have had an eye on EU policy - not that the EC has given them permission.

I'm really unsure how your reasoning works there.

It is pretty simple: the EC cannot "authorise" anything, it doesn't have the power to say "this is acceptable in EU law". The only body that has that power is the CJEU. The EC might be able to say "we don't care", but that's about the limit of its powers, if that.