This is going to sound superficial as hell, some things are just horrendously ugly in R. Like the various pipe operators. %>% might just be the ugliest I've ever seen, in any language (and, yes, I know why you need % %).
The visual impact of a %>% or a |> or whatever fades within a few minutes of reading code for me, what I'm looking at for beauty relates more to the AST structure. Lack of repetition, ease of understanding the data flow, ability to adapt the data flow, etc. that's what makes code beautiful to me.