i'll give you some expert advice, go for smart or semi managed.
2 kinds of switches to consider, POE or just normal.
I usually recommend the netgear prosafe line as they're usually decent and some have POE. Ubiquiti also has high performance switches with high wattage POE for bigger setups. For non POE, tp link is fine, but avoid dlink. Cisco has a very good affordable line of semi managed switches.

If you want to do any kind of bonding like combining multiple ports with NAS or servers, you will at least need semi managed for that, and there are different types of bonding as well. However irregardless of bandwidth, if all devices use gigabit ethernet, than a single central switch is cheaper, otherwise if bandwidth is important to you, your central switch is going to be a lot more expensive if you need to distribute bandwidth to other switches.

When looking at specs, switching capacity should be at least half of port capacity in non blocking config. Traffic goes in and out so thats why switching capacity needs to be at least half. The features a switch has can make a difference but most of it is just for configuring LAN, things like VLAN, LAN based QoS (if expecting another device to do L3 for segmentation), and other things. Layer 3 switches are only needed if you do layer 3 segmentation.

the port capacity of a 16 port gigabit switch is 32Gb/s (16Gb/s full duplex), the switching capacity need only be 16Gb/s non blocking. Additionally avoid the store and forward switches.

port capacity has nothing to do with operation, its just the sum of all port bandwidths. This number is only important when you are checking other specs like forwarding/switching capacity (routing capacity for a router).

However for routers, routing capacity is a useless number to home users, you'd want NAT capacity instead (usually not listed).