I want to create a datagrid that has cells that are vertically next to each other and has the same name merged. Tried to google many sources but couldn't find any help.
This is not possible with Clarity in a datagrid, as this breaks the pattern of rows holding content atomically. Pagination, rendering, sorting, filtering would all be much more complex to implement and understand for the user.
I would suggest that you use a regular table which can have column or row spans attached to a cell, or just have each row repeat the content in the cell instead of trying to merge it.