I have various kind of lith and internegative film, new and old (in 18x24cm and 8x10"), plus a few sheets of some old unknown film, that i found in some wooden holders which came together a Kodak 2D 8x10" outfit (quite old version, leather bellows).
I tried to check the film identification indents against a database of old film, but i could not find an answer.
Probably the best choice for an unknown film is Diafine, but i don't have it, and i am not willing to pay a huge shipping fee (local vendors don't have it in stock at the moment).
In the end i decided to do a few tests, one sheet at a time, with the unknown film and with some of the ortho films.
Once upon a time i had a darkroom, now it is stored at many Km. of distance, so i have to do with a makeshift darkroom set up in a small bathroom.
Waiting to be ready to develop more sheets together, i bought a used Paterson Orbital processor, plus a Kaiser Duka 5 with red filter, to be used with ortho films.
I have to do one 8x10" or 18x24cm at a time, but that's not bad for testing.
I have a large stock of Rodinal, so i am willing to try it at high diluitions, even more than 1:100, which would be good to tame the contrast of lith film, and also not bad to be used with an unknown film.
I had in mind to start with Rodinal 1:150, in semi-stand development (vigorous initial shaking, to eliminate bubbles, then a small shake every 15 minutes). Then it came to my mind that the Paterson contains a small amount of liquid, and with high diluition the amount of concentrated developer would be very little... possibly not enough to develop the area of an 8x10" film!
I checked the informations available on the Web, with no conclusive evidence.
What is the maximum amount of liquid that can be filled in the Orbital, with no adverse effects?
The minimum should be 75ml, but many people use a double amount. Even 150ml, at 1:150, would be just 1ml of concentrate. I am afraid it's too little to develop 500 square centimeters!
Should i change my plans?

As my old darkroom chemicals are too old (although i have to check the powders), i found a stash of Agfa chemicals for a cheap price, which was the right thing at the right time
Along the usual Rodinal and Agefix, i got a big bottle of Sistan.
Somebody gave the advice of using it at half strength, with a hint of Agepon or Photoflo. Others say to use it IN PLACE of a surfactant.
I tend to trust the users of this forum more than other sources, at least as a starting point, so i am waiting for your precious input

cheers