The first thing that came to mind (maybe due to mentioning stochastic) is MITx's https://micromasters.mit.edu/ds/ Masters in Data Science. It's statistics, but 102. (Of the alternative MIT 6.0002, which is MIT's intro to DS stat class.)

I take it you've done Discrete Mathematics and have enjoyed it? If you haven't, I highly recommend going that direction first, as imho it is the most beneficial math class a programmer can take in college.

Yes, I did Discrete Math long ago and enjoyed it.

Thanks for the link! Though it looks too basic for me, I was hoping for something on the more advanced topics I mentioned.

You could look at https://edeeu.education/subject/mathematics

This is very interesting. Is this an online Masters or is it a free program?

There’s wikiversity - https://en.wikiversity.org on all of different topics.

And several others are trying to create mind maps.

But would be great to have a resource like OSSCSU or TeachYourSelfCS for X...

At least for the “main” subjects like Maths, Stats, Chem, Bio, Physics and Humanities - Econ, Anthro, Pschy, Pol Sci, Law, Sociology.

I'm one of the core OSSU team members. Unfortunately I'm not aware of any such resource, but I'm really interested in finding someone who can build an OSSU/Math curriculum!

Stephen Strogatz's lectures are good for dynamical systems.

https://youtu.be/ycJEoqmQvwg