TG Control V3
PA3AEF/HP8562A-Tracking-Generator
Homebrew tracking generator for base-band, 6cm, 3cm and 12mm bands
YTLExtended
SOT-23 Bipolar (BJT) ROHS
The MMBTA14 is a bipolar made by YTL in a SOT-23 package with 5 pins. SOT-23 Bipolar (BJT) ROHS.
PCBKit's library has its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 2,980 are in stock at JLCPCB (part C52976695). 2 open-source boards in 2 repositories on GitHub use it.
The library has no symbol for this part yet.
PA3AEF/HP8562A-Tracking-Generator
Homebrew tracking generator for base-band, 6cm, 3cm and 12mm bands

samba09/camper-pir-switch
PIR motion switch for Revotion NODE Ambient (AM312, PhotoMOS, KiCad)
Yes. the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOT-23, with 5 pins. Its footprint is drawn on this page.
YTL publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C52976695, with 2,980 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the S8050 by hongjiacheng, the SS8050 by hongjiacheng, the MMBT5551 by hongjiacheng and the MMBT5401 by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.