Please Help with 5th party member build

Need 5th for my super-duper team (also some ideas for others' team builds):

I always found that traditional tanks do very little for the team, hence I split duties of a tank between my melee dps and the healer/buffer, resulting in a stable 4 man PotD (no scaling) group that allows to "carry" companions through their respective quest lines.

I prefer to go for level 20 before Hasongo, so right now the only companion being carried is Eder. Once he's good, I will have a spot open for 5th custom character on my team. I would appreciate to learn new "OP" build while doing so. At the moment I have the following team comp:

1. Trixie (Swashbuckler: Devoted/Trickster) as WotEP Deflection-Riposte "main tank"

2. Xander (Templar: Kind Wayfarers/Eothas Priest) as Healer-Buffer turtle (120+ all defenses lvl 16)

3. Vilara (Mindstalker: Ascendant/Streetfighter) as Main DPS (Streetfighter+Mortars and Ascentant for self buff, and some extra utility for hard fights)

4. Ravig (Loremaster: Troubadour/Wizard) as De-buffer/Summoner turtle (Used to open fights with Summons, then put maluses on enemies: Pull of Eora+Expose Vulnerabilities+Arkemyr's Torment & Hex for sneak attacks from Vilara) and then stand around occasionally summoning stuff with 12% vamp/ +10 deflections chants always active.

5.???

I have never played/been attracted to Druid,Monk or Barb in either PoE or PoE 2: Deadfire. Would appreciate strong PotD builds including these classes focused around big damage numbers   Thank you!