There are definitely a lot of similarities. I spent some time reviewing allocator designs to see if some ideas might carry over.

One problem I found is that a lot of allocators benefit from being able to track freelists based on some minimum sizes needed for allocations (e.g., https://github.com/sebbbi/OffsetAllocator). This problem is a bit different in that I want to know the first available block even though it might be much bigger than I need. Having multiple lists might still be useful though, but it's not as effective as how they're used in allocators - you'd usually need to search multiple freelists to know the first available instead of one.