Which once again does not prove your assertion, any more other ones I reproved. A look inside those study guides will not show a collection of doctrinal teachings, with a few Scripture texts referenced, which is hardly a study guide for the Bible, but will contain the 66 books (or more) of the Bible with some commentary on them.
And rather than all Bible study guides attempting to show you what is meant by individual verses in the KJV, I can show you classic Prot. commentaries that differ with the rendering of the KJV in some places, and thus their meaning, and many even leave out parts that are found in the KJV,
The KJV can be overall closer to a RC Bible than some of the newer translations, while the your own RC sanctioned translations are hardly uniform.