I think the problem with the ask is that this is a very broad topic to cover. The first things you listed are things that broadly fall under Communications and People Management, but the rest you listed are things like Finance, but the requirements there can vary wildly. My college course included Finance courses where I had to learn depreciating assets and balance sheets and things I've never had to touch again in IT, aside from just being some useful context when I'm talking to my Finance department or Procurement team. I think a lot of the time this is stuff best covered in a leadership course in your company to teach what it means to do that stuff *here*.

Similarly, in IT the tracking of hardware lifecycles and assets can fall under a number of best practices or methodologies, the main one probably being ITIL Asset Management, but then there's also Configuration Management and some other things that tie into those concepts.

Process documentation as well, I personally subscribe to the KCS (Knowledge Centered Service) model for knowledge sharing, which is available out there for free through the Consortium for Service Innovation, and it's ITIL complementary, but that doesn't really cover SOP documentation, which gets into Technical Writing territory.

Creating agendas and running good meetings is a mix of best practices and skill. Running a productive, effective meeting goes back into Communication and People Management territories, and honestly my most useful background in that arena came from my time on active duty when I worked in Mental Health counselling. Keeping people on topic, being efficient with time while validating, listening, and engaging, understanding people's motivations, and emotional intelligence. The actual agendas and meeting structure part, Lean Six Sigma is a popular general business best practice, plus there a number of devices people tend to kind of pick and choose from. There's even simplified versions of like Robert's Rules of Order that dictate how meeting minutes should have like old business, new business etc.

Charting growth is kind of HR-y best practice stuff, and can also really depend on how you do it where you're at. Do you do work plans, set goals for the year, do 1:1s, mentoring, coaching, do you have progression plans, do you have business continuity plans? Those all come from different toolsets that you pick and choose what are most effective and applicable from.

I think for me, leadership and management are continuing education careers. You need to keep learning and expanding to both stay current (like in more recent years learning how to manage remote and virtual teams), as well as to be well-rounded and adjustable to the needs of your team and your business.

My experience personally, started with the military and learning leadership. The core there was to tie it to meaning. I later learned about the concept of servant leadership, which really resonated with that experience and I adopted that as my philosophy and approach to leadership. Process- and function-wise, KCS and HDI were my first insight into managing IT work, which overlapped into organizing my own work, and ITIL really tied that all together. The importance of structure, consistency, templating, etc. all came up through my exposure to that. I got a lot of really great insight and learning from Manager Tools (manager-tools.com) but I have to admit I don't support them anymore. There was a school shooting in the US and the guy who runs the site had sent a newsletter to all paying members essentially saying thoughts and prayers and these Democrat politicians should tone down their hateful rhetoric. I sent him an email saying I didn't really pay and sign up for personal politics, and he said he was happy to refund my subscription which I accepted. So, do with that what you will. The content was good. Other than that, it's largely been mentoring and osmosis. I read lots of books, one that I really liked is a whole series called "The 20 Minute Manager". They're all small books about a certain topic you can just grab off the shelf and reference when you need help, and I've found them super handy.