I spent way too much time farming wood so here's a thread on where to get them. Info that I mention here aren't final though so take it with a grain of salt.

Fragrant Cedar Wood generally have a moss-like growth around the lower base of the trunk. You can easily find it around Wolvendom

I forgot to mention. I recommend Wolvendom > Starfell Lake for Fragrant Cedar is because you can also farm the Lamp Grasses and Wolfhook. Most/All of these trees are Fragrant Cedar

Birch trees.. Well... If you've played Minecraft. You know what it looks like.. Or you've seen it irl. Anyways, white trunk with yellow-orange leaves. Easily found around Stormbearer Mountains

Fir Wood, fairly tall with "brown" trunks. Found easily around Stormbearer Mountains. It's the most common that I know so you shouldn't have problem finding it

Pine Trees. Uh... I have no idea why there are pinecones around Fir trees.. But I think all Pine Trees that I found came from Dragonspine. Yes, Dragonspine, good luck.

https://twitter.com/jeanlisacanon/status/1387322410605551618?s=19

Sandbearer. I'd say this is Liyue's version of Fir Tree. Medium in height, the color of the leaves aren't always the same hence the two pictures. Found a good amount around Nantianmen. Shouldn't be too hard to farm since it's a fairly flat land

Ciuhua(?).. I'm sorry, couldn't find it. I somehow managed to get it while finding Sandbearer but it will be around Liyue. Not exactly sure where. Will be trying to find it and updating if I find a good place

Bamboo... I forgot that you can use bamboo.. Anyways, you should be able to find Bamboo around Qingce village.

Important notes:
• Trees seem to have low respawn timers. You can farm it several times a day, I'm presuming farming 1 of each to 100~ will let you farm it again if done in the correct order. The exact time of it's cooldown, I'm not sure.
• 3 wood per tree, doesn't change --

based on size. It always seem to drop 3 regardless of whether it's a large tree or a smaller tree.