Hopefully a simple question\answer.
I'm collecting channel names from 15 different Social Media sites. I'm an example person so I'll pretend it's just 2 sites Facebook and Instagram

So I have a relational table that will keep the Facebook PK & Instagram PK.

I can get the data using 2 different design methods and don't know which is better. (it's not a matter of writing the SQL I can do that for both)

1) Should I have all the channel names in ChannelNames(rowid, channelname)
2) Should I have a table for each site facebook(rowid, channelname) Instagram(rowid, channelname)