My hypothesis is that if the ratio of dark matter/matter in galaxies with supermassive(weighing billions of suns) black holes are higher the black hole itself would be made of a large portion of dark matter.
That might have interesting implications.
Are there any data supporting this or that the composition of galaxies with supermassive black holes are different.
Supermassive black holes (SMBHs) are primarily made of baryonic matter, not dark matter (DM).
In order for the black hole to grow, it needs to accrete matter. In general, the probability of a particle, dark or baryonic, just randomly passing the SMBH and falling in is small. Rather, a large accretion disk forms around the SMBH. This disk is made from baryons which may collide and lose energy; in other words, the gas loses energy due to friction, emitting it as radiation. But because DM is collisionless, it doesn't take part in this accretion disk.
However, the answer to your question (about the galactic ratio, not about the SMBH's ratio) may still be "No, it's not the same", but for another reason than you think:
The more massive the galaxy is, the more massive its SMBH tends to be, and hence the more luminous its accretion disk tends to be (at least for some periods of time). The result is an active galactic nucleus (AGN), the most luminous of which are known as quasars.
Since galaxies are all formed from the same matter with a primordial ratio of baryons-to-DM, in principle all galaxies should retain this ratio. However, comparing the stellar mass of galaxies to their total mass, the so-called stellar mass-halo mass (SMHM) relation shows a distinct trend: Baryons seem to be "missing" at both the low-mass and the high-mass end, as seen in this cartoon plot from Silk & Mason (2012):
The plot shows the number of galaxies as a function of luminosity (which correlates with mass). The higher the mass, the fewer the galaxies there are. If all galaxies shared the same baryon-to-DM fraction, they should lie on the red line. But observationally, the relation seems to follow something like the blue line.
The reason is thought to be feedback processes expelling the baryons from the galaxy, hence lowering the baryon-to-DM fraction. The more massive the galaxy, the larger the AGN feedback. Low-mass galaxies have less efficient AGN, but still have feedback from stars (both exploding supernovae and radiation pressure). So do the massive galaxies, but the low-mass galaxies have a shallower gravitational potential, making it harder for them to retain the gas.
