I am new to growing, and have a few questions about my newly purchased plants. 1st, what do these tags mean?

I think it’s a cut from the same mother.. they probably just label each one for accountability. It’s lilac diesel the strain from ethos I believe, date planted is straight forward and the number is likely just numbers for the sake of the dispos

As far as I know, those are just slightly different forms of the strain. While they are creating these strains, they are picking them out of hundreds of seeds that are germinated. each generation, they'll remove the plants that didn't grow as desired, and keep the ones that the grower likes. this is why one strain can end up with a #1, #2, #3, and so on and so forth. they're just different 'variants'. sometimes you might not be able to find detailed information about what sets each 'variant' apart from each other.