Update: I figured out what two of the plants are

[simplycurious]

...but, apparently, when I planted lemon seeds in the compost, both the seed and the TOMATO SEEDS in the compost began to grow. Now I have tomato seedlings all over the pot along with a few lemon seedlings. Should I separate them into bigger, different pots? Should I plant each seedling in a separate pot or group the tomato seedlings in one pot and the lemon seedlings in another?

[rainbowgardener]

was this the continuation of something? It would have been more helpful to attach it to the thread than make a new thread.

Maybe this? https://www.helpfulgardener.com/forum/viewtopic.php?p=274754&highlight=#274754

But definitely separate pots, one for each plant. Once they start getting big, the tomatoes need to be in 5 gallon bucket sized pots. The lemon trees will too eventually, but they will take a LOT longer to get there

[simplycurious]

My bad. Thank you.