There are modern transistors with good parameters. For example such as:
AO3401 (P-channel, Rds 0.050 Ohm, Vds 30V, Id 4.0A, Vgs min 2.5V, SOT23)
IRLML6401 (P-channel, Rds 0.050 Ohm, Vds 12V, Id 4.3A, Vgs min 1.8V, SOT23)
IRLML2502 (N-channel, Rds 0.045 Ohm, Vds 20V, Id 4.2A, Vgs min 2.25V, SOT23)
SI2336DS (N-channel, Rds 0.042 Ohm, Vds 30V, Id 5.2A, Vgs min 1.8V, SOT23)
AP2306AGN (N-channel, Rds 0.035 Ohm, Vds 30V, Id 5.0A, Vgs min 1.8V, SOT23)
In you application convenient to use P-channel.