I was searching at the website
allbibles.com, I clicked on Catholic giant print bibles, I then clicked on to King James version, and it showed me the original King James Bible of 1611 complete with the Apocrypha
The King James Version does have many MAJOR doctrinal differences with the Douay-Rheims (at first I was stumped because they looked pretty similar), however, if you dig really deep, you’ll notice the differences (since these Bibles were just beginning to be translated into English, they ALL have their errors - but that’s okay, they are noticeable, and Holy Spirit will help you

- or just pick a different translation alltogether).
The first one is an error in the KJV:
“And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.” - Exodus 3:14 (KJV)
“God said to Moses: I AM WHO AM. He said: Thus shalt thou say to the children of Israel: HE WHO IS, hath sent me to you.” - Exodus 3:14 (DRB)
The KJV changes God into a “thing” with THAT instead of WHO. The reason for this is because the Geneva Bible always changed God into an “it” like in first John:
“All things were made by it, and without it was made nothing that was made.” - John 1:3 (Geneva)
“All things were made by him: and without him was made nothing that was made.” - John 1:3 (DRB)
So the KJV translators sometimes picked up on the habit of the Geneva’s tendency to change God into “it” “that” etc… HOWEVER, in Isaiah 51:9 the KJV changes God into an “it” and the Geneva gets it correct.
Here is another difference:
“I will put enmities between thee and the woman, and thy seed and her seed: she shall cursh thy head, and thou shalt lie in wait for her heel.” – Genesis 3:15 (DRB)
“And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.” – Genesis 3:15 (KJV)
And lastly (I’ll wrap this up)… the Old Testament in the King James Version likes to call God the “Rock” rather than “God:”
“To shew that the LORD is upright: he is my rock, and there is no unrighteousness in him.” – Psalm 92:15 (KJV)
“That they may shew, That the Lord our God is righteous, and there is no iniquity in him.” – Psalm 92:15 (92:16) (DRB)
Now, this occurs within hundreds of verses within the Old Testament in the King James Version. Douay-Rheims actually follows suite in some verses:
“And he said: The Lord is my rock, and my strength, and my saviour.” – 2 Samuel 22:2 (DRB)
But, in the King James you just find it more strongly. Why? Because it is a protestant Bible.
For King James (the actual King and not the Bible), he was an extreme anti-Catholic, he didn’t consider the deuterocanonical books part of the Bible:
“And as to the Apocrypha books, I omit them, because I am no Papist, as I said before” - King James, Basilikon Doron
He wrote his Basilikon Doron before he commissioned the King James Version in 1604, so, as you can expect,
the rules he laid down were to not put “emphasis” on the deuterocanonical books. They were separated in the original 1611 version if I’m not mistaken (correct me if I’m wrong).
King James spews lots of hatred at Catholics throughout all of his writings; and even protestant groups such as the puritans! Do not expect the King James Version to be “catholic friendly.” King James liked to do things HIS way (pick and choose), it’s quite ambiguous what kind of doctrines he held onto (they don’t really fit in a denomination which was unique at the time), some say he was close to calvinism, but he defies it in many of his writings. All in all, King James and his Bible are a “mixed bag,” you never know what you’re going to get.