Correct me if am wrong, you have a list of file names in ListFileName.csv file?
If yes then you have to design job like below..
tFileinputDelimited_1----Main--tMap---tFileinputDelimited_2-- then process here.
tFileinputDelimited_1 provide ListFileName.csv file path and schema.
tMap- use output filter with below expression to get only required files.
row1.FileName.startsWith("T001") || row1.FileName.startsWith("T002") || row1.FileName.startsWith("T003")
tFileinputDelimited_2 provide file name with required details to process input file which we are getting after filter.