How to match element in two list of strings using a soft matching

soft_matching

from difflib import SequenceMatcher

def group_by_with_soft_matching(input_list, threshold):
    matching = {}
    last_matching = -1

    input_list_sorted = sorted(list(set(input_list)), reverse=True)

    for index_x, x in enumerate(input_list_sorted):
        unpacked = [y for x in matching for y in matching[x]]
        if x not in matching and x not in unpacked:
            matching[x] = []

            for index_y, y in enumerate(input_list_sorted[index_x + 1:]):
                if x == y:
                    continue

                if SequenceMatcher(None, x.lower(), y.lower()).ratio() > threshold:
                    matching[x].append(y)

        else:
            continue

    return matching