Does the pre-order horse return at all after the epilogue

According to this website: There are 19 breeds of horses that can be found across the lands of Red Dead Redemption 2, each of which handles differently with its own defined characteristics.

1. American Paint Horse, Work Horse
2. American Standardbred, Race Horse
3. Andalusian Horse, War Horse
4. Appaloosa, Work Horse
5. Arabian Horse, Superior Horse
6. Ardennes, War Horse
7. Belgian Draft Horse, Draft Horse
8. Dutch Warmblood, Work Horse
9. Hungarian Halfbred, War Horse
10. Kentucky Saddler, Riding Horse
11. Missouri Fox Trotter, Race Horse, Work Horse
12. Morgan Horse, Riding Horse
13. Mustang, War Horse, Work Horse
14. Nokota Horse, Race Horse
15. Shire Horse, Draft Horse
16. Suffolk Punch Horse, Draft Horse
17. Tennessee Walker, Riding Horse
18. Thoroughbred, Race Horse
19. Turkoman Horse, Race Horse, War Horse

Answer Summary

To answer your question, There are missions that are available in some chapters (While playing as Arthur) that aren't after/during the epilogue (While playing as John). Here is a list of missable missions (that must be played as Arthur) with their corresponding chapters:

(found at: https://www.gamerevolution.com/guides/450689-red-dead-redemption-2-missable-missions-quests-point-of-no-return)

RED DEAD REDEMPTION 2 MISSABLE MISSIONS OR QUESTS (CHAPTER 2):

• Good, Honest Snake Oil (Valentine Police Station. To be completed by Chapter 6)

RED DEAD REDEMPTION 2 MISSABLE MISSIONS OR QUESTS (CHAPTER 4):

• Brothers and Sisters, One and All (Available after completing “Help a Brother Out”; head to the church north of Saint Denis. To be completed by Chapter 4)

• Fatherhood and Other Dreams (Available after completing “Angelo Bronto, A Man of Honor”; head to Arthur’s room and read the letter. To be completed by Chapter 4)

RED DEAD REDEMPTION 2 MISSABLE MISSIONS OR QUESTS (CHAPTER 6):

• Do Not Seek Absolution I and II (Available with a honor rank of at least 4 from the coal mine in Annensburg. To be completed by Chapter 6)

• Of Men and Angels I and II (Available from the church in Saint Denis. To be completed by Chapter 6.)

• The Course of True Love IV and V (Read the letter from Penelope in your tent after completing a mission following Chapter 5. To be completed by Chapter 6.)

• Money Lending and Other Sins VI and VII (Speak to Strauss in the camp. To be completed by Chapter 6.)