As a generic support character, Haniel can slot in a variety of teams. Here are some examples:
Charge Team
Zero
Haniel
Hathor
Jiuyuan
Zero
Haniel
Skia
Mint (F2P version)
This team uses Lakshana, Cosmos, and Anima to trigger Blossom, Remora, and Charge as the main reactions. Zero's Instant Cycle ability from skill makes it so triggering Charge (Blossom + Remora) very easy.
While not core to the team, Haniel is a nice flex character that can setup Zero Meter rotations.
Link to Full Zero Charge Team Guide
Discord Team
Daffodill
Baicang
Sakiri
Haniel
On the opposite end of the Esper Wheel, we have Discord, which triggers when combining Nova and Scorched.
In this team, Haniel's Psyche Element will be utilized to trigger Nova, so while she may not contribute DPS wise, her Element still contributes to the overall team either by cycling into/from her.