I can offer you another language comparison: Oberon-2, Modula-3, Sather and Self with focus on "object orientation". It is particularly because of the asterisk "*" annotation that you can find both in Oberon and in Nim.
[https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.14.6912&rep=rep1&type=pdf](https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.14.6912&rep=rep1&type=pdf)
