Per Google there are types, it does list “you can target specific operating
About device targeting For Display and Video campaigns, you can target specific device types, operating systems, device models, and ad inventory (spaces where publishers allow ads to run), as well as carriers and wireless networks. Some of these advanced mobile and tablet options aren’t available for other campaign types. Computers: These are desktop or laptop devices with screens larger than 7" in diagonal. Selecting this option will give you access to all ad inventory that runs on computers. Mobile: These are hand-held devices that include a phone. Tablet: Tablets are mobile devices that don't necessarily include a phone. TV screens: These are devices that stream TV content such as smart TVs, gaming consoles, and connected devices like Chromecast. This targeting option is only available for Display and Video campaigns.