Txpool
Transactions the node has accepted but not yet mined. "Queued" means a nonce gap is holding the transaction back.
Pending
—
ready to mine
Queued
—
waiting on nonce
Median gas price
—
Gas demand
—
sum of gas limits
Gas-price distribution
Txpool is empty — nothing is waiting to be mined.
Pending transactions
Nothing waiting — the chain is caught up.