I don't understand your reference to AM26LS32, in my opinion, there's no reasonable prototype of an analog buffer circuit that can be copied from the datsheet.
Your specifications aren't completely clear, I think. Your requesting Ro < 100 ohm and Vos < 0.7 V. How much offset and offset drift is acceptable? How about the signal range? Even a perfectly matched discrete buffer will have some offset and a temperature drift of the same. A npn + pnp follower pair is a very simple circuit with reduced voltage shift. If low gain error is an objective, you would possibly go for a feedback buffer structure. There are many options, you are mainly limited my your power of imagination.
P.S.: Page 3 of the datasheet is showing an input clamping circuit, not a buffer, i think.