Now that I have an Ontario 8980, I took a closer look and compared it to the Queen Q1986 and the Marbles 278. Sure enough they are all nearly identical, the caplifter not working correctly on any of them! The Marbles 278 is a very close copy of the Ontario version, including this design flaw.
From what I can surmise, the Queen version from 1986 made changes to the Mil-k-818 to increase tool strength, as well as increasing the distance between the tools by adding thicker liners, and mechanical crinking the can opener and awl more severely. For reasons unknown, the Queen contract was not renewed. Based on the example I have, fit and finish was very sub par, and the cap lifter did not function (in the specs, there are test criterion from all the tools but the caplifter).
The Camillus version was discontinued with the factory closing in 2007. The Ontario version does not appear until late 2009 (at least I can't turn up any earlier). The F&F on this version are better, and all of the implements are made of thicker material, but the hook on the caplifter is still too thick as it comes from the box to pop that top! The Ontario version does not seem to have been widely popular, reviews point out nail breaker springs and sharp corners. There were (and are) Camillus knives still in the pipeline for less money than Ontario was asking. Production seems to have ended in 2015, although some were sold as factory seconds by Ontario until 2016.
The Marbles 278 version is a very direct copy of the Queen/Ontario camp knife, including the poorly redesigned caplifter.
It is interesting that Colonial chose on their 2205 Military Scout knife to use tools that seem based on the Bear & Son series of Scout knives, rather than going for a direct copy of any previous Mil-k-818 version. This was a wise move, given the design flaw that was continued by Marbles in their version. I did contact Colonial about the change to the shorter screwdriver blade, and I was told that the shorter blades were used on a different version of a scout knife that had been made previously. I can only speculate at this point that perhaps this is a result of collaboration between the two companies in the knife's production. It is rather odd that Bear and Son discontinued all versions of 4 and 5 blade scout type knives at nearly the same time as Colonial introduced the 2205