> Luon looks mostly like Oberon and not so much like Lua

Luon can indeed look similar to Oberon if you use upper-case keywords and semicolons, but there is not need for this. Both - Lua and Luon - have much in common with Modula-2 (given lower-case keywords). There are many elements in Luon which are pretty similar to Lua, e.g. constructors, pcall, most control and loop statements. But there are also significant differences of course, because Luon is a statically typed language and Lua isn't.