In my experience, I haven’t actually seen or heard of top places focusing that much on clinical grades (to the level of deciphering between H and HP that is) unless there is a red flag.
Whether you get the big 4 interviews is part random, part where you went to med school (sad but true, especially for a couple of them), part not having red flags (HP is not a red flags), part having the usual good letters and AOA if possible, and a big part having a narrative and the things to back that up.
That last part gets overlooked - if you want to go to the “top” places (big 4 for sure but also many places on the T20) they tend to gravitate towards the person who they think is going to become a well-known academic researcher and has published 10 papers, or the person who they think will become a well-known advocate who has written thought pieces in the paper, or the person who they think will go on to work in health policy and already worked on the hill, etc. The top places will absolutely select that person with the narrative (and track record to back it up) over the person with all Hs as long as said person doesn’t have red flags. In fact, I’d argue that the “better” (read: thought of as more prestigious) the program the less they focus on some of those typical nuances (the exact step score, the H vs HP, the exact class rank) assuming an otherwise relatively strong app.