I am not aware of any all-online IOLS anywhere.
I think that there are parts of it that could be converted for live online instruction. I worked with our troop’s navigation instructor to develop some PDF tools for teaching map reading and compass use. Many of the recipes and “prep” items could in fact be taught online. However, the primary function of IOLS, the hands-on do-it-in-the-outdoors that’s needed to start developing muscle memory for using a compass, orienting a map, lighting stoves, lanterns, building fires, prepping meals, etc is nearly impossible to deliver digitally.
From a practical standpoint, it could be valuable for PLCs to start thinking through ways to help train their ASMs in outdoor skills, at least as much as possible. For example, maybe there’s a local compass course that the scouts and adults could be sent to run through, on their own, with a digital partner looking over their shoulder to help them with getting the compass correctly oriented assuming you’ve got good enough coverage. That doesn’t solve the “tick the IOLS training box” issue, but it does start teaching the ASMs the skills that they will need to help the SM support the scouts. As a bonus, it reminds the scouts that it’s their troop and that by helping train their ASMs, they will get better support in running their program.