The increasing penetration of power electronic converters has given rise to emerging stability phenomena requiring new approaches to stability assessment. While electromagnetic transient simulations reveal unstable behaviour, impedance-based analysis provides insight into converter-grid interactions and offers greater computational efficiency. Accordingly, this paper investigates how converter-level outer-loop control influences the small-signal stability of grid-following voltage-source converters connected to a weak grid. A generic 120 MVA power park is modelled in PSCAD, with outer-loop control implemented locally at converter level. Reactive power and AC voltage control are compared on the q-axis, while active power and DC-link voltage control are compared on the d-axis. Converter self- and transfer admittances are extracted through a 1 200 Hz frequency scan and combined with an analytical grid impedance to form the converter-grid loop gain. Stability is assessed using Bode and Nyquist analysis. The results show that outer-loop control affects damping characteristics and resonance frequencies. In particular, AC voltage control introduces asymmetric damping around the fundamental frequency, resulting in supersynchronous interactions. Differences between the d-axis configurations are most pronounced around the fundamental frequency and become small above twice the fundamental frequency. The findings show that outer-loop control should be considered in grid-connection studies of converter-connected devices.