The clean way to fix this is to change your statuses in all campaigns to match the appropriate channels. While Marketo Programs come with standard statuses out of the box, Salesforce only has Sent and Responded in all campaigns, so you'll need to do some cleanup in every campaign, which can include changing the status of every record in every campaign and then changing the labels within each campaign.
The fast way is to always create your SFDC Campaigns in Marketo. When you do this, Marketo will push its own statuses into Salesforce, and done consistently your new statuses and campaigns will outlive your old statuses and campaigns.