1. Funnel report: Website visits --> "Sign Up form" --> Income, by lead source
Are you looking to see what website visits then convert on the sign up form? Broken down by lead source?
What does income refer to? Income of the company or income generated for your client?
2. Funnel report: Website visits --> "Demo Request" --> Income, by lead source.
Is this the same as the above report by looking at conversion on the demo request form?
When it comes to goals reports, this is where HubSpot has some shortcomings to address. I came across this post from @karstenkoehler that walked through how to utilize the Sales Analytics > Forecast & Pipelines > Quota Attainment report to view deals created vs. goal (quota) specific to #3.