Here is a MWE of what I mean:

Once x is defined, it is correctly showing up in markdown text (e.g., md"$x"), but it is not interpolated inside a markdown table.
This probably is a problem of the Markdown module of Julia itself since it also doesn't work in the REPL.
There already seems to be an open issue for it at https://github.com/JuliaLang/julia/issues/16194#issuecomment-615501656
I guess the same issue for list, because
md"""
* y1 = $(y1[])
* lx1 = $(lx1[])
* k1 = $(k1[])
* s1 = $(s1[])
"""
is rendered to
* y1 = :(y1[])
* lx1 = :(lx1[])
* k1 = :(k1[])
* s1 = :(s1[])
in Pluto.
Yes, this is unfortunate. You could give this GitHub issue a thumbs up:
https://github.com/JuliaLang/julia/issues/16194#issue-152992087
FYI this works on Julia master now: https://github.com/JuliaLang/julia/pull/37130
Wow!
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FYI this works on Julia master now: https://github.com/JuliaLang/julia/pull/37130