Can we find elements or values in this way?

If there is a list or a specified value as shown in the code below, can we find a list or a specified value in the current script through the command rather than manually finding it?

In the case of a list, it needs to be deleted periodically for memory management, but the longer the code gets, the more lazy it is to find the list one by one and enter the delete command of the list, so I really want to solve it.

a = []
b =[]
c  =[]
c =[]
ss =[]
djen =[]
jdnsn =[]
djdj=[]
jdjd = []
dbdjsj = £
sjej = djs
djsn = £§£§
sjdns = £&£[£

# A function that finds the generated list
ex) The list is a, b, c, d, ... There's this
# A function that finds randomly specified values, such as sjsj = djs
ex) dbdjsj = £, sjej = djs, djsn = £§£§, ...
Or
dbdjsj, sjej, djsn, ...
Output in the same way