I've been playing Battletech since 1984 (yes, 1984) and have a fair amount of the pen and paper manuals.
I haven't opened the Technical Readouts, but the variants don't seem familiar. Are they from the written material?
Yes, the pen and paper Battletech is turn based, but that doesn't mean the documented 'Mechs should be modified. The math has already been done (and it's usually accurate) for weight, speed, armaments, and Battle Values/cost.
Each 'Mech has strengths and weaknesses.
Please, please honor the decades of canon.
They tried doing CBT variants for several mechs, like Thor, which originally had entirely canon variants. It uh, didn't work. All of the canon Thor variants were underwhelming, hard to use, and basically death traps.
Most of the other "Prime" variants are based on CBT, but modifies them so people actually use them, or adapts them so they fit with MWLL's build rules (ie medium lasers are now 2 tons). Like the Warhammer WHM-6R, which drops the standard beam lasers for the comparable pulse versions, and adds some electronics to it.
So instead of being 2xPPC 2xMedium Laser 2xSmall Laser 1xSRM-6
it's now: 2xPPC 2xMedium Pulse Laser, 2xSmall Pulse Laser, 1xSRM-6, BAP, GECM, LAMS