Plugins create nodes names like childMarkdownRemark and childImageSharp.
So the node is named after child + type + plugin. That seems overly verbose to me. I would think markdownRemark and imageSharp is already clear enough.
Also the type seems unnecessary since the user will already know what remark or sharp does, and the type of content they work with. I get that you want to avoid naming collisions, but then I would suggest picking a clear standardized prefix like ext.
So nodes could be named extRemark and extSharp.
What do you think?