Raku is the language.
Rakudo = Raku “Do”
Rakudo Star = Rakudo* (i.e rakudo, rakudo-devel, rakudo-doc,…)
It has more linguistic cohesion that the tooling of a lot of languages.
Java, javac, java* seems totally normal. I feel like it’s because “Raku” sounds alien and so you don’t read Raku-do you read Rakudo because Raku “isn’t a word”.