There are two sets of designs are taken from the Kerry D. Wong's blog by changing the model of OP-AMP and MOSFET are shown in the attachments below as Figure 1 (link 1) and Figure 2 (link 2).
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What is the difference between these two designs?
In older design (link2) 1nF capacitor creates local negative feedback loop for AC to avoid oscillations.
In newer design (link1) he has used LT1636, opamp that can drive large capacitive loads. Compensation network (220pF and 150Ohm) is recommended in datasheet of LT1636. You can not replace LT1636 with TL071 here.
PS: IRF6201 is not suitable for electronic load. You need a lateral MOSFET or even special linear MOSFET, not a trench MOSFET.
It should be able to dissipate a lot of power, so you will need much better package then SO-8. Look for TO-220 or TO-247 packages and a big heatsink with fan.
Typical MOSFETs that you can find in 3-5A electronic load projects are IRFP150N, IRFP260N.