So it's saying that somewhere between 60mA and 200mA, the LDO will refuse to source more current?
I've written data sheets like this before. What TI is doing is defining current limit of the part as being the point that the output has dropped by 100mV. The reason to do this is because an LDO is supposed to regulate to a tight output voltage--by the time you get 100mV below the regulation point, you're basically losing enough regulation that you're out of spec for where the part should be.
Why write it like this? Because as a customer you want to know when you can't count on the output voltage to be where it is supposed to be. If it's 100mV or more away from where it is supposed to be, that's a problem.
Yes, the regulator will refuse to source more current at some point between those two current levels. However, the regulator may start dropping off at 60mA but then continue sourcing a little bit more and more as you drag the output further down. Create a graph with Iout on the X-axis and Vout on the Y-axis. Imagine a 3.3V regulator--draw a line at 3.3V that is flat from 0 to 55mA. Then put a point at 3.2V and 60mA and draw a straight line from 3.3V, 55mA through the 3.2V, 60mA point straight down to zero voltage. This is the curve of output voltage versus current for the regulator.