How come you did that, and still made a couple of gross errors in the notation?
More than that, you give a secondhand line (15.Bxd5?!) as mainline Marshall, you claim that 4.d3 refutes the Jaenisch, and in general you use any meaningful way to show your ignorance.
Avoiding the "Spanish Torture" in the first place and playing 2...Nf6!
Taking on e5 is a mistake for white. Either Qe7 or Qg5 is at least equal.
Some of Black's best sidelines against the Ruy Lopez are the Open Morphy (5... Nxe4), the Neo-Arkhangelsk (5... Bc5), the Arkhangelsk (5... b5 6. Bb3 Bb7) and the Møller (also known as the Modern Arkhangelsk: 5... b5 6. Bb3 Bc5).
Some playable defenses such as the Classical, Cozio, Fianchetto, and Norwegian exist which are perfectly sound despite their reputation for being second-string. Due to the nature of the Ruy Lopez, it is possible to find a pet line which is perfectly sound positionally and tactically engine-approved which very few of your opponents are likely to have played or even studied.
Avoiding the "Spanish Torture" in the first place and playing 2...Nf6!
It could still transpose to 4 Knights Spanish if white wants 
Avoiding the "Spanish Torture" in the first place and playing 2...Nf6!
It could still transpose to 4 Knights Spanish if white wants
Ummm... no.
1.e4 e5 2.Nf3 Nf6 3.Nc3 Bb4 is perfectly sound and viable- White does get the bishop pair early on, but Black has splendid development and active pieces. The game is more or less equal.
Avoiding the "Spanish Torture" in the first place and playing 2...Nf6!
It could still transpose to 4 Knights Spanish if white wants
Nope! No Spanish Four Knights! It can be a Three Knights Game, and I have yet to find anybody under 2000 with even a clue how to play the White side of it.
After 1.e4 e5 2.Nf3 Nf6 3.Nc3 Bb4 (SPANISH FOUR KNIGHTS AVOIDED!!!) and now every clown I face under 2000 plays 4.d3, when 4...d5 is already slightly better for Black.
Only move is 4.Nxe5, and after 4...O-O, either 5.Nd3 or 5.Be2 usually followed by 6.Nd3.
Try again, you will never see a Spanish or Italian against me. Not even via the Portuguese Opening (1.e4 e5 2.Bb5 c6!) or the Bishop's Opening (1.e4 e5 2.Bc4 Nf6 3.d3 c6!)
Try again, you will never see a Spanish or Italian against me. Not even via the Portuguese Opening (1.e4 e5 2.Bb5 c6!) or the Bishop's Opening (1.e4 e5 2.Bc4 Nf6 3.d3 c6!)
Even 1.e4 e5 2.Bc4 c6!? at once, seems perfectly legit.
Anyway- while it is quite clear that Black has several sound ways to handle the Ruy Lopez/Spanish, I would suggest the Deferred Steinitz (3...a6 4.Ba4 d6). There are (at least) a couple of reasons for this suggestion.
a. It isn't well known, and usually the opponent will not know the lines to some depth.
b. After White's main try 5.0-0, Black can switch between two fundamentally different lines: One purely positional and solid (5...Bd7) and one very sharp and full of tactical details (5...Bg4 6.h3 h5).
Yet, openings hardly matter up to certain level. The games are decided by mutual errors- you do have to know how to utilize a positional/material advantage, or defend against a speculative attack, or win a superior endgame way before learning opening theory.
I use the Ruy Lopez (Variant Style): 1. e4, 2. Nf3, 3. Bd3. 4 O-O 🥰
After 6. Re1, black should push away the white bishop (6...b5) because the e5 pawn will be hanging.