Fighter: Banneret
A banneret is a knight who inspires greatness in others by committing brave deeds in battle. The mere presence of one in a hamlet is enough to cause some orcs and bandits to seek easier prey. A lone banneret is a skilled warrior, but a banneret leading a band of allies can transform even the most poorly equipped militia into a ferocious war band.
A banneret prefers to lead through deeds, not words. As a banneret spearheads an attack, their actions can awaken reserves of courage and conviction in allies that they never suspected they had.
Rallying Cry
When you choose this archetype at 3rd level, you learn how to inspire your allies to fight on past their injuries.
As an action, you can choose any number of creatures within 60 feet of you that can see and hear you. Each one regains hit points equal to 1d10 + your fighter level, and get advantage on saving throws against being frightened until the start of your next turn. You can use this feature a number of times equal to your Charisma modifier, and you regain all expended uses at the end of a long rest.
Royal Envoy
Knights of high standing are expected to conduct themselves with grace.
At 7th level, you gain proficiency in the Persuasion skill. If you are already proficient in it, you gain proficiency in one of the following skills of your choice: Animal Handling, Insight, Intimidation, or Performance.
Your proficiency bonus is doubled for any ability check you make that uses Persuasion. You receive this benefit regardless of the skill proficiency you gain from this feature.
Inspiring Presence
Starting at 10th level, once per turn whenever you take the Attack action, instead of making an attack, you can instead choose a creature of your choice within 60 feet of you that can see and hear you. The creature can use its reaction to move up to half their movement speed and either take the Attack action or cast a spell with a casting time of 1 action.
Bulwark
Beginning at 15th level, you can extend the benefit of your Indomitable feature to an ally. When you decide to use Indomitable to reroll a saving throw and you aren't incapacitated, all creatures of your choice within 20 feet of you that can see and hear you can also reroll its saving throw and must use the new roll.
Paragon of Inspiration
Starting at 18th level, You become an unwavering beacon of hope and inspiration for your allies. Creatures within 60 feet of you gain a bonus to weapon attack and damage rolls equal to your Charisma modifier.