You could ask for a PLC with "RTD inputs".
But PLCs with RTD inputs are typical small ones intended to control a single or a few temperature control loops.
Most typical today is that the PLC gets all analog signals conditioned as 4-20mA. That means that the temperature sensor has an integral 4-20mA transmitter. There are other signal types, 0-10V, +/- 10V, 0-20mA, +/-20mA, or more, but the 'industry standard' is 4-20mA.
Also, the type and number of inputs and outputs are most often not fixed but can be configured in a modular way. A PLC with a fixed number of I/O is called a "brick". Personally I dont like brick PLCs. If you can find a brick PLC with exactly the nuber of I/O you need, it will almost certainly be a bit cheaper than a modular PLC. But then you have a less flexible PLC.
That the PLC shall be able to read an analog temperature signal surely cannot be the single requirement that shall decide which PLC brand and type you shall get. Try to define your needs more precisely. Also think long-term. What could your requirements be 5-10 years from now ?