Probably not as you are thinking it but the following might work.

Brand Awareness..................H

Podcast................................A

Content Partnerships............A

Total Thought Leadership..............S

Sponsored Tradeshows...........A

Unsponsored Tradeshows........A

Total Tradeshows.....................S

TOTAL BRAND AWARENESS.......T

That's what I was thinking but then each subgroup (i.e. brand awareness) need to roll up to main category Advertising and Marketing.

Sorry, I missed that Brand Awareness was just one part of Marketing.  Maybe you need to think about using Departments or Projects.

Departments are generally used for tracking parts of your business that are generally eternal.  The usual examples are two or three different locations will have similar expenses or even within the same building people can have departments for Office, Production, Sales, etc.  Generally all departments share the same G/L accounts, though some are never posted to under specific departments (eg. Telephone would be an office expense, not necessarily Production).

Projects are usually transient because they do not always remain as part of the business longer term.  They also share the same G/L accounts but again some projects may use some G/L accounts, while others will not.

For reporting, Departments show the same Income statement with columns for each department side-by-side.  Projects only show the G/L accounts posted to for each project and never show as compared to other projects.

In your case, those accounts above under Brand Awareness could be posted to the Marketing Department or Project but not for other departments you may have.  Balance sheet reporting is not really great for either Departments or Projects but splitting up your income statement to use a series of accounts created similar to the above setup, could work.

Data entry is a bit more cumbersome to use Departments and/or Projects but if you need the reporting, it is generally worth the effort.  The use of Recurring Entries, Default accounts, etc. will help speed up the data entry required.

Anyone else have any ideas?

I had also considered departments but that's not really the intent here.  Thank you for your suggestions - great ones!