Right, NamedDims.jl is the one closest what the article describes. Very simple and light-weight, plays well with others.
There is a small zoo of packages attaching also labels along the indices, alla python's xarray. Perhaps it's a little too easy to write such things... but once we understand the design space the hope is to quietly take most of them to the woodshed.
And in other packages, such as [AxisArrays.jl](https://github.com/JuliaArrays/AxisArrays.jl/) and [AxisKeys.jl](https://github.com/mcabbott/AxisKeys.jl). In fact, the AxisKeys README has [a nice overview of packages with similar functionality](https://github.com/mcabbott/AxisKeys.jl#elsewhere).