Best Full-Time Alternatives To Lateral To IB Post-Undergrad?

I wanted to try to start a thread for this since its something I have been pretty unsure about for a while now. I have seen a ton of posts about different viable paths to IB but have always struggled when comparing different opportunities to each other. 

What do people in the industry think are the best possible jobs to get out of undergrad to try to lateral into IB after working there for a bit? Like corporate banking vs transaction advisory services vs transaction opinions vs valuation vs corp dev, etc. And how does the boutique, LMM, MM, BB, EB, Big 4 vs non-big 4, or any other type of ranking influence the choice you should make or your odds of lateraling? I know networking, the current job market, and other factors are important too - but which jobs have the perceived highest chances? 

Any insights would be greatly appreciated and let me know if there's anything missing from my post that would make it more helpful to others.