OK, got the electrical problem in stable state for time being with power back the main well so cattle are drinking...shop not on but can live without the old shop temporarily...
Anyway, I'd do something like this with your Line_Bus array but wonder why there's so much duplicated and seemingly just sequentially-numbered data. Seems like a lot of redundancy in the duplicated data department of redundancy department, but maybe this is just demo data??? That aside--
1×4 categorical array
8 9 9 line10
It possibly could be more useful to leave the numeric columns as numeric but if they're just IDs, the categorical is probably better than string.