Refactor to massively simplify internal route list helper classes

[caendesilva]

This is not meant to be extended, so we don't need to contract the helpers

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.97%. Comparing base (78e9b0d) to head (9e01e0a).
Report is 1 commits behind head on master.

❗ Current head 9e01e0a differs from pull request most recent head f9a80ad. Consider uploading reports for the commit f9a80ad to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1679      +/-   ##
============================================
- Coverage     99.97%   99.97%   -0.01%     
- Complexity     1743     1744       +1     
============================================
  Files           182      181       -1     
  Lines          4669     4663       -6     
============================================
- Hits           4668     4662       -6     
  Misses            1        1              

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