For me, i started with an iPad Air first
iPad Air (2021) as just wanted a established tablet brand while holding on to my Pixel Phone
iPhone 15 Pro Max ( Oct 2023)
Apple Watch (Oct 2023)
Apple Airpods Pro 2 ( Nov 2023)
Apple TV 4K 3rd Gen ( Nov 2023)
Probably will get a macbook air late next year
I’m brand agnostic so I’m not really in it it for whatever ecosystem. I just care about each individual device ad if it’s the best for my needs or not. That said, guess it took a year or two? I don’t own most the stuff you said though. Just a couple of apple products for the “ecosystem” I care about.
I find ecosystems to be overrated and other brands have competitive ecosystes or whatevs themselves so I don’t actively pursue that. If apple has best products in enough areas they get my money. Otherwise, I continue having the best experience by buying the best products regardless of brand.