INL has used Nintendo's original PCB names:
http://wiki.nesdev.com/w/index.php/TxROMHowever, you will note that the only practical differences between all of the TxROM boards are:
* Do they have PRG RAM (TSROM)
* Do they battery back that PRG RAM (TKROM, TNROM)
* Do they have 4-screen mirroring (TRROM, TVROM)
* Do they support more complicated mirroring than just H/V (TLSROM, TKSROM)
* Do they support CHR-ROM and CHR-RAM simultaneously (TQROM)
* All boards without anything extra (TBROM, TEROM, TFROM, TGROM, TLROM)
TL;DR: Yes, INL's boards are all the same just with different sized flash, SRAM, and battery.