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Unfortunately we also do not have any data on the input resistance of these devices (this can actually be a very difficult parameter to measure, especially for low voltage devices). Given that these devices are both made on a CMOS process however, a good estimate for these parameters would be 100MOhms for the differential resistance and 6000GOhm for the common-mode.
Both, CMOS and JFET input op amp may have input impedance in the range of 1Tohm but for the low voltage and RRIO CMOS would be the only choice. Please take a look at OPA328, OPA392, OPA391, OPA320, OPA325, OPA333 for 5V supply or LMP7701 (Vs up to 12V) and OPA928 (Vs up to 36V), etc.
