OH my goodnessAllow me.
On the left is the Blon BT3 which bears no resemblance to the BL03 on the right. The BT3 is the replacement for the BL01 which is second left but the BT3 isn't as good. The second from right is the BL05 which replaced the BL03 but also wasn't as good, there is a green version of this called the BL05s which is supposedly better. But now BGGAR has released a video showing the Blon 01 which isn't the BL01 at second left but is the BL03 Mk2 which the BL05 and BL05s were supposed to be.
But thank for the explanation