As of right now, a lot of gold sites use the GE/lumbridge for trading gold, which is obviously going to be the first places Jagex check although this could be speculation
I have never felt the need to trade in either place, but somewhere between (so let's say varrock entrance near the wizards) to be sure that i'm nowhere near the spots they would normally mass trade in, this means avoiding the reasons given for RWT catching as i'm somewhere else
It could again be speculation on my end, I have seen many people trade in both spots and not get touched, I have also traded someone (traded them 600M in x2 300M trades) and got banned using the GE transfer
Another of my old avatars I see xD, damn man I need to add more to my remember thread lmao