I need a bit more context, but out of the ones you have, something like Etho is the best. It sticks in the mind a lot better. However, may I suggest some other titles?

- Kronos
- Pyradix
- Lumin
- Lux
- Big Buck

I also suggest you get more specific and name your business after the market it's in. Bossfight Entertainment, Runic games, and GE Appliances are two examples. Remember, the name has to be notable, so make it short but unique!

That's all the tips I can really give you, I wish you the best of luck with your company!

Etho is a youtuber.
Gaming Inc. is very generic.
F.T.H.O and CP inc. are things nobody will know what they mean. If it's personal it's not good since others can't understand.

Also, you need to give more context, I can't vote on something when I have no idea what it stands for or what it means.

Don't name your company Etho, he's a popular YouTuber and you'll just annoy people because it'll seem like you're trying to be him.

The name of the channel isn't always very useful for small channels. Try posting a URL instead.