I've got Session Drummer 2,  looking for some Disco Midi patterns (and possibly samples too).
Anyone know where I can get some?

I think you'll have difficulty finding much that's called "disco". Some older funk titles might be useful. Give Groove Monkee a bit of time. Their drum grooves include Session Drummer mappings. Check out the Retro Funk set. Is that even close to what you're looking for?
 
https://groovemonkee.com/...o-funk-midi-drum-loops

"Disco" is still sometimes a dirty word, especially in marketing.
Look for some old Soul and R&B grooves.
 
I remember reading that when the Bee Gees recorded Saturday Night Fever, they were actually trying to emulate a Stax/Volt feel.  It came out too polished and "white," and became its own entity.

This song is a good example of the groove.  Listen to the rhythm parts, and you'll probably find patterns that emulate them.
 
Chic - Le Freak
https://www.youtube.com/watch?v=h1qQ1SKNlgY

Slugbaby
"Disco" is still sometimes a dirty word, especially in marketing.

This?
 
https://upload.wikimedia....s/f/f1/Rich-in-70s.jpg

maybe scrape something from https://freemidi.org/genre-disco?PageSpeed=noscript ?

pwalpwal
maybe scrape something from https://freemidi.org/genre-disco?PageSpeed=noscript ?

I've had better luck here ...
http://www.midiworld.com/files/

abacab
This song is a good example of the groove.  Listen to the rhythm parts, and you'll probably find patterns that emulate them.
 
Chic - Le Freak
https://www.youtube.com/watch?v=h1qQ1SKNlgY

Or this

Yup, that too! 

Honestly, i'd just program a "4 on the floor" kick and take a hi-hat line from another pattern.