Still not gone into NG+ but it's so quick grinding level upgrades end game that I've trying a few strength weapons to give me variety.
I have around 40 weight to keep medium roll speed to use for weapons and shield combined so you can have a lot of different strength build styles just with different weapons. You can add whatever ashes of war that you want to any for these weapons builds and it's effective, though some a lot better than others.
All Purpose Tank: Heavy Grand Epee+25, A str scaling, 6 weight + Fingerprint Stone Shield+25, 29 weight C str scaling 100 normal block, 90 block boost.
Has highest resist shield by far in all types at once and a good range, fairly light sword that has the poke from behind shield move, can get boring but very good survivability with defensive poke tactics.
Fire Tank: Serpent Hunter Great spear+10, A str scaling, 12 weight + Visage Shield+10, 24 weight, 100 normal block, B str scaling, switch to Grafted Dragon fist weapon +10, 2.5 weight C str scaling. Also uses the Spear Talisman for buffed guard counter moves.
Really fun tanking build as the Visage Shield is a mini version of those giant face monsters that spew flame, which you can do while blocking and walking with its special. Grafted Dragon has a massive fire nuke spell that you quickly pull out as an offhand. Serpent Hunter has highest poke from behind damage for str of any weapon I've found so far. Really good defence and great melee and fire offence build, all without having to put points in int, they actually scale most with str. A damage dealing tank with less defence and resistance than All Purpose Tank, but much more fun.
Hammer Knight:
Heavy Giant Crusher Hammer+25, S Str scaling, 26.5 weight + Brass shield+ 25, 100 block, 69 block boost, 7 weight.
Hammer time with great moveset and stun effect, can still block a lot too if you need to switch to 1 handed. Also effective as 1 hander with high enough str. Carrion Retaliation on medium shield + Wraith calling bell adds some nice range damage too.
At 70 str 30 endurance usually can still wear heavy armour for good poise with all these builds, also carrying the Pulley Crossbow +9 and Clawmark Seal +24 for incantations for extra utility. Can often carry Grafted Dragon +10 too if you wear a lighter helm, etc.
Also have Greatsword+24, Trolls Golden Sword+24 for duel wield greatswords, plus Lance+24 and Prelates Inferno Crozier +24 so I can dual wield colossal swords, great spears or colossal hammers, but takes so much weight have to go near armourless to duel wield the hammers. Will likely put a few of those at +25 too depending on remaining stones.
So many different weapon options with the same build.