Different players, different play styles.

Damage is obviously important but playstyle is to me as well.
My favorite character has always been the Plate mail (in a game of magic items everywhere standard non-magical plate mail is afk)
Knight (fighter) welding a two-handed blunt weapon with reach for polearm-master (a feat not in the game), such as a lucerne hammer or a bec-de-corbin (also not in the game)
Standing stalwart at the point of attack. Stopping the enemy from advancing on the squishies. Sentinel feat (not in the game).

So as of right now the only aspect of my favorite character in your D&D based game is I can play a fighter.

I am left to assume you'll put basic armour in the game like plate mail.
I am left to assume you'll put the phb feats like PAM & Sentinel in.
But even in 5e you have to homebrew a lucerne hammer/bec-de-corbin

So I am making the suggest for it.

Even if you don't go the specified route. There honestly should be options. A one-handed metal-capped whip for a blunt reach weapon ala Castevania though not a polearm. Or a 3-section staff sanjiegun for a polearm. Just something.