Yes there are.
Each wallet.dat are into its folder:

wallets/FirstTestWallet:
wallet.dat

wallets/FirstTestnetWallet:
wallet.dat

wallets/TestOPReturnWallet:
wallet.dat

wallets/ord:
wallet.dat

wallets/test_cli:
wallet.dat         wallet.dat-journal


And there are into testnet3/wallets and testnet3/tesnet3/wallets