[tomfoolery]

You have an enviable fool report. Loads of stations, strong signals, line of sight over flat ground, and virtually all coming from the same tower farm. All signals are high-VHF (channels 7-13) or UHF (channels 14-51). These are the (real) channels the signals are broadcast on, not the ones displayed on the TV screen (virtual channel numbers). Virtual channels are meaningless to the antenna.

I would think a small antenna like the HBU11 or ANT751r would be plenty. No amplifier needed. Also, the Clearstream C2-V, which has the high-VHF dipole, or the DB2e plus the optional dipole ad-on for high-VHF. You could try them indoors, which may be enough, but you're likely to get better results outdoors no matter what antenna you use.

I would try it outdoors, perhaps mounted to a wooden pole tied to a ladder (temporary), or even just sitting on a ladder, aimed around 133 degrees magnetic (use a real compass, unless you can see the towers), with a clean length of RG6 straight to the TV, through a window for testing purposes.

By any chance, being in the Houston area, is there stucco on the house?