Sounds like you might be looking at the wrong blockchain in your Ledger Bitcoin Wallet. Check what Blockchain you're connected to:
Does say something other than "Bitcoin"? If so, click settings, then Blockchains:
It'll ask if you want Bitcoin or Bitcoin Cash, Click Bitcoin:
Then select Legacy:
It also sounds like you need to do the same for your LTC... make sure you're selecting Legacy, not SegWit