Consider a site percolation but change the dimension of the lattice from $n\times n$ to $n\times m$ where $n\not = m.$ S-clusters are defined for $n\times n$ lattice. The occupation of each site are independent of each other.
Example about site percolation with $m=n$, a square lattice.
Example about site percolation where $m\not =n$, non-square lattice.
Is the non-square model still called site percolation?
P.s. Super interesting site percolation programming here for the shortest path.


You want to read on Russo-Seymour-Welsh (RSW) theorem:
and Antoined P:
Ariel Yadin in Arxiv and his lectures
Hugo Duminil-Copin in Arxiv and Hugo's lectures
RSW Theorem
https://www.unige.ch/~duminil/publi/2015IAMPproceedings.pdf
http://www.unige.ch/~tassion/fichiersPDF/voronoi.pdf