Happy to share my experiences, the best paying jobs out of uni are usually these ones (no med actually), I also want to caveat that money isn't everything, but if this is what you want...:
Quant trading:
Pros: Normal hours (~45-50 hours a week), incredible pay (150-200k+ in Aus), lunch catered, first class flights if another office wants you
Cons: You need to be very good at maths or programming, some 30-40% of grads get fired in their first year due to poor performance (so the environment is very high stress)
Investment banking:
Pros: Good pay (~$150k+ in your first year incl. bonus), free dinners and taxis back home, good career progression (+50k comp every year)
Cons: Haha well... working 9-1am everyday and working weekends every week (at least 1 of Sat/Sun, sometimes both), having no life outside of work and the Friday night clubbing/drinks with the crew (doesn't even happen anymore because COVID)
Tech:
Pros: Decent comp ($120-140k when you factor in stocks) and very nice perks (free lunch, amazing office, etc)
Cons: There are pretty much only software engineering roles in tech companies (other roles are 20% paycut) and you have to be very good at programming
Management Consulting:
Pros: Comp is alright ($100k+), very good progression (salary doubles every ~3 years) and incredibly good perks (business class flights, 5 star hotels, huge expense budgets)
Cons: Work life balance can be very bad at times (IB level bad, so you're essentially getting paid 70% of what they earn but doing the same hours at times)
There are other high paying roles, e.g. Mining Engineers, but I don't know enough about them to make an informed comment, hope this is valuable
As for degrees, you can get into any of these roles studying any degree (Tech needs a BSci probably, and IB prefers Commerce) but the others are pretty degree indifferent