Hi @gerardo5FC3
As per the issue description to organize files in chronological order, in Reader mobile you get two options one is "Recent" and one is "Starred". The "Recent" option can not be manually sorted but if you check under the "Starred" tab you will get the option to sort by name and by date.
Here is a help document you can refer to:
https://www.adobe.com/devnet-docs/acrobat/android/en/workingwithpdf.html#star-files-mark-favorite
Let us know if that helps.
Thanks,
Harsh