Hey Kota, Cheers for the kind words. Honestly, after investing...

Hey Kota,
Cheers for the kind words. Honestly, after investing for 25 years or so... and making many mistakes... my no. 1 has always been advising others.
My poor father can attest to that In any case, what I am happy to list are producers I follow/hold and if I can offer any sort of advice, it's protect your capital first and go with proven management (sure... it's not as exciting or high risk, but... you will make money, because they want to make money and have done it before.

These are all the usual suspects (producers in no particular order), though I am sure many would argue about the quality of some over others.

Mid Tier-
EMR
CMM
RMS
SLR
RED
GMD
WGX
RED
GOR
RRL
BGL
RSG
WAF
TIE

Small Cap-
BCN
CAI
PNR
CYL
ALK
OBM

What is interesting is just how few small producers there are.... the last 5 or so years have seen quite a few failures, which has led to very few producers actually getting funded (and even then... it's not been great outcomes). As I understand it, there is not one single gold project being built in W.A now.
BGL was the last. Everything else has been put on hold or acquired by others (and are still not being built).

As for which have the most upside... @Joelstar has shared some very well researched graphs rating stocks, perhaps you might find them a good starting point. You could also look at some small funds which are in Australia that are focusing on Gold?

In any case, good luck, it's hopefully a very good time to be entering the sector, but nothing is guaranteed and I think many would view the gold space as a sort of widow maker!