What theme, boilerplate, demo content use to start a site (free)?

I want to do a few WordPress sites, and to speed the process I would like to start with a minimal site that would have a home page, contact page/form, single page, maybe a gallery page, so if I need it it’s already there and if not I just delete it.

In other words a package of content that 90% of business sites would use. What is your choice?

PD: Non proprietary, cloud service, etc., something that I can use on any hosting.