Do people know of good resources (books, blogs, YouTube channels, whatever) regarding advancing to the higher levels of the tech industry?

I can find lots of resources for how to get started in your career but as I've advanced it gets harder and harder to find guidance (this is not surprising, but still lamentable). I am currently one promotion away from Senior at my company and I have no idea what to expect beyond that.

Any suggestions?

Most people I talk to in the industry hate the "puzzle-y" nature of interviews (e.g. coding on a whiteboard, now get it to run in linear time, oh wait there's a trick you don't know but could totally look up if given the chance) and acknowledge that it does a poor job determining the value of the prospective hire.

Why then is there no sign of this changing? I realize it's a hard problem to solve but in theory the entire company is at stake when it comes to hiring good/bad devs. You'd think somebody would have come up with a better way.

RequestFactoryFactoryFactory.java

...because how am I going to configure my RequestFactoryFactory without a RequestFactoryFactoryFactory?

Invent a startup:

"It's like <existing company> but for <target audience>"

ex: It's like Uber but for dogs.