LF356 is an op-amp that has a JFET input. These JFET Op-amps are an excellent choice for low noise applications using High or Low source impedance. Having a JFET at the input side increases the bandwidth gain and reduces the input noise of the IC.
2N5457 is an N-Channel Depletion layer Junction Field Effect Transistor. This JFET is an N- Channel - Depletion layer JFET that is widely used in audio equipment for amplification, tone modulation, and other purposes.
The MPF102 JFET is a popular N-Channel JFET that is commonly used in low power amplifier circuits. The JFET is no longer in production and finding it might be difficult. So they are not recommended for new designs.
The 2N547 is an age old JFET that was commonly used in Pre-Amp circuits. The JFET has VDS of 25V and VGS of 25V with a Gate current of 10mA. The FET also has high Input Impedance and Low Input Capacitance.