All are so different, I'm surprised anything would be flagged at 1 and honestly wouldn't worry, we've an early walker but no other babies her age are walking yet that we know.
My LG took steps at 9 month, and has been fully walking since 10 month, she now practically jogs 😂🙈 but we definitely don't have any words yet.
Lots of babbling, mamamama, dadadada, gagagaga, rararara etc. she definitely understands more, will run to the kitchen when you shout her for breakfast, dinner etc, can identify her "giraffe" and "bluey" soft toys and collects them when we ask. Understands "big kiss" and "dancing" which is the cutest, I feel she's changing daily and learning so much picking up new things every couple of days. The way she plays with her toys changes all the time I'm constantly amazed she knows how to do things.
Trying to say just don't worry, they'll pick everything up in their own time and they're constantly learning and developing 🙂