I know about different LAN typologies(like star, bus, ring,...) and that Ethernet is one of the ways to practically implement wired LANs.
this is such a huge topic.visit https://www.wikihow.com/Create-a-Local-Area-Network-(LAN) get some idea about this.
I wonder what other technologies exist to make LANs?
A LAN, or a local area network, is a bit like the internet only a lot, lot smaller. That is, it only consists of a few devices that are all connected to each other. You may want a LAN so you can share files, send pictures and music to other computers, connect to a printer easily, or have a good old fashioned LAN party to play games with some pals.
you have to know network devices,cables and network models to make network.
is it possible to implement all the typologies with Ethernet?
yes,now a day ether-net mainly use for make every LAN topology