What is the order of process when deciding teams that make playoffs if they have the same record and havnt played each other during the season?

is this the formal we are using based on NFL rules?

Division tie breakers

Head-to-head (best won-lost-tied percentage in games between the clubs).
Best won-lost-tied percentage in games played within the division.
Best won-lost-tied percentage in common games (games played against the same opponents).
Best won-lost-tied percentage in games played within the conference.
Strength of victory (the combined won-lost-tied percentage of all the teams that a club has defeated).
Strength of schedule (the combined won-lost-tied percentage of all the teams that a club has played against).
Best combined ranking among conference teams in points scored and points allowed.
Best combined ranking among all teams in points scored and points allowed.
Best net points in common games.
Best net points in all games.
Best net touchdowns in all games.
Coin Toss.

Conference tiebreakers
Apply division tie breaker to eliminate all but the highest ranked club in each division prior to proceeding to step 2.
Head-to-head, if applicable. (For ties between 3 or more teams, this step is only applied if there is a head-to-head sweep; i.e., if one club has defeated each of the others or if one club has lost to each of the others.)
Best won-lost-tied percentage in games played within the conference.
Best won-lost-tied percentage in common games, minimum of four.
Strength of victory (record of all the teams they defeated that season).
Strength of schedule (record of all the teams they played that season).
Best combined ranking among conference teams in points scored and points allowed.
Best combined ranking among all teams in points scored and points allowed.
Best net points in conference games.
Best net points in all games.
Best net touchdowns in all games.
Coin Toss.

Then I am not understanding how GB got the wild card over St. Louis or my team with a conference record of 5-7 as that was worst then both of our records of 7-5. I would think St. Louis actually should have got that last playoff spot

JD is saying we are mostly using nfl tie breaker rules for playoffs.If we are using something else after a certain point.He would have too explain it too us.