Guy I work with suggests putting squash and sweetcorn together. As the squash spread they climb the corn plants. I might try that this year to save space.
I'm doing this, think traditionally you put beans in to climb the sweetcorn and squash to provide shade on the ground but I've got a small climbing squash.
I've done the 3 sisters method a few times - get the sweetcorn well established first then the beans and squash. The squash don't climb , they trail where ever they like - you would have to tie them up and then support the heavy fruit as it forms.
Guy I work with suggests putting squash and sweetcorn together. As the squash spread they climb the corn plants. I might try that this year to save space.