I think you don't need to run a full node just to transfer them to your ledger nano.
Y
Can't you just import your BIP 39 Seed with all your 30 inputs into electrum?
As you have a mix of all 3 formats, you will need to create 3 electrm wallets, with different derivation paths, for all 3 formats:
m/44'/0'/0'/0 for P2PKH (Legacy, starting with 1)
m/49'/0'/0'/0 for P2SH (segwit starting with 3)
m/84'/0'/0'/0 for Bech32 (native segwit, bc1)
I'm dealing with one SegWit private key on a paper wallet (LM...), not a BIP39 seed.
Creating 3 different wallets in Electrum makes no sense to me, I think you're misunderstanding but thanks for the help.