>Anyone knows if there is a name for that specific design? This is a keyboard which has the mid section having a big vertical delete key aligned with the upper arrow. So far, I have seen the Logitech MX 5500 and the HP Elite V2 having this design. I would like to perform a Google search to find all keyboards available with such design. I do not know if a name exists for such design.

You would think there might be a name for that, since there are names for the variants of Enter keys: https://www.reddit.com/r/MechanicalKeyboards/comments/5c30ql/the_origin_of_the_term_bigass_enter/ , but I couldn't find one.

If you can find a decent image of the layout, maybe you could cut just the vertical delete key into a new image, and do a Google Image Search on that.

Come to think of it, maybe you could ask on that subreddit.

Another option - maybe you could use keyboard remapping software to make a couple of adjacent keys both do "delete".