Richard,
Do you mean the Program Channels and Statues or do you mean what Lead Status field values? Or maybe you mean all of these?
Typically, I've seen the following:
Program Channels similar to defaults in Marketo:
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Blog
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Direct Mail
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Content
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White Paper
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Webinar
So you see that Blog and Content could be the same, we could also have "Website" and whatever else. In your case I might stick to Website and Blog, keeping the blog separate because the content there is probably different.
Your premium content on landing pages would be under "Content" or "White Paper" or something like that. Just choose one category that makes sense for you.
Each particular piece of content has its OWN program that is synced to a unique SFDC Campaign.
The Progression Statuses will sync back to the SFDC Campaign, ensuring consistent results between systems.
What I would do is ensure your Lead Source picklist values are matched to your Program Channels and the forms are pulling that in.
I know some people are careful to pull in Lead Source based on the actual source of the traffic. For instance, a lead doesn't actually appear in a webinar, they come via your Website or an Advertisement, so that is the real source and some people also match those individual sources to specific SFDC Campaigns or other methods.