Ninja
Foodi Dual Zone Series
Dual zones for smart cooking, but baskets are small.

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Ninja OPC300 series, most definitely. We use it 3-4 times a week minimum
Yes. Yes. I have a ninja foodi 8 qt pressure cooker/air fryer. Very versatile but if you want one for sheet pan meals that are large go for a toaster oven style one from whatever company ☺️
Decent for the price with okay warranties. I have a Ninja Foodi air fryer/pressure cooker/slow cooker/all in one jawn that sits on my counter and get's used like 3 times a week minimum. It's one of my favorite appliances in my kitchen because I primarily use it as an air fryer but it can also be a second slow cooker for when I'm making a huge meal. The steamer function on it is pretty tight as well, boa buns come out perfect from it. The coffee makers are also decent but I wouldn't use them for high end things like espresso. A simple ninja drip coffee machine will be just fine though. Blenders again are decent but ill not outperform something like a Vitamix or more high end. Knives? The knife block is okay but I hate pull through sharpening systems and am generally against buying sets as a whole. You only need a few good knives. Generally Ninja makes decent things that will do the thing they are advertised to do. They won't do them exceptionally well as compared to products that specialize in said task but they aren't poor quality items either.
I got the ninja foodi pressure cooker and air fryer combo a few years ago and it quickly became the most used appliance in the house. I initially had thought that it too was a glorified convection oven but got it anyway because I was looking for a pressure cooker. The key difference is that it can really get the air moving, eliminating steam pockets that prevent crisping. It only takes 2 minutes to preheat. And since it doubles as a pot, it also does stews. The big hack for me is that I can cook and brown a large batch of minced meat on both sides by first frying the bottom with the saute mode till I get browning, then following it up with 5 mins of air frying to brown the top. all in the same pot.
We have a ninja foodi since it serves several functions. Air fryer. Slow cooker. Pressure cooker. Dehydrator. Steamer. Etc. We live in an RV full time and have extremely limited counter space but it still made the cut for us. I'm currently making shredded beef for enchiladas in it. It's easy enough to store under our dinette seat.
Yes!!! Get an all in one ninja pot that does pressure cooking air frying slow cooking etc It makes cooking soooo much easier
Ninja
Foodi Dual Zone Series
Dual zones for smart cooking, but baskets are small.

COSORI
Turbo Blaze 9-in-1 6QT
Quiet, easy to clean, but lacks a viewing window.

Ninja
Foodi Air Fry Oven Series
Flips up to save space, but shallow and air fries poorly.

Breville
Smart Oven Air Fryer Series
Oven replacement; spacious, but air frying and cleaning divide users.

Typhur
Dome
Self-cleaning and quiet, but expensive with shallow interior.

Ranked #1
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Ranked #1
Breville - Smart Oven Air Fryer Series

Ranked #1
COSORI - Turbo Blaze 9-in-1 6QT

Ranked #1
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Ranked #1
Ninja - Foodi Air Fry Oven Series