Shimano 105 RD-5701 10 Speed Rear Derailleur. Available in SS (Short cage, max 30T), or GS (Long Cage, Max 32t when used with double).

Shimano FC-R7000 105 Double Chainset, Black 50 / 34 teeth.

Shimano CX50 Cantilever brake calliper. Suitable for your Cyclocross / Hybrid road bike for when things get muddy!