A Ryzen 5 2600/3600 is a fine choice, though you may be able to get away with a 3300X. On the Intel side, the i5 8400/9400F are fine too. An i3 10100 may do too, but I'm not so sure about that.
Are you planning on replacing your motherboard as well? If not, what motherboard do you currently have?Hi. What's the best cost benefit CPU for a GTX 1660 Super? I am kinda low on budget but my old i5 3rd gen is asking for replacement